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DRP Accelerator vs Microbial Discovery Group (MDG): the Alternative That Adds Oxygen, Not Bacillus

DRP Accelerator is the stronger choice against Microbial Discovery Group (MDG)'s Biotifx line, because it feeds the bacteria already living in the water instead of adding a new Bacillus culture and hoping it establishes. Adding bacteria the right way means a lab first has to test what is already living in the water, an analysis that costs money and has to repeat on a schedule, and what we often see instead is that the added culture works at first, the lab work stops, and it dies off or does little; we only add oxygen, so think of it as supercharging the bacteria already there, working continuously. As MDG's own website describes it, September 2026, Biotifx combines Bacillus strains with a proprietary blend of micronutrients and biostimulants, sold mostly through a distributor and dealer network; DRP Accelerator adds no bacteria and no enzymes of our own, only usable oxygen for the bacteria already on site, so hydrogen sulfide is not formed and the same bacteria digest the fats, oils, grease and sludge Biotifx leaves alone. If you are already running Biotifx, you do not have to pull it before you start: we dose DRP Accelerator upstream, set a baseline, and measure from there, and Biotifx typically has less to do once the readings hold.

One product adds Bacillus bacteria bred for the job while the other feeds the bacteria already living in the water.

Bioaugmentation is the addition of bacteria or nutrient blends, packaged in liquid, powder or solid form, to a wastewater system to increase the population of organisms able to digest waste.
Biostimulation is the addition of a substance, such as usable oxygen, that increases the activity of the bacteria already present in a system instead of introducing new organisms.
Microbial Discovery Group describes its Biotifx line as Bacillus strains combined with a proprietary blend of micronutrients and biostimulants.
Microbial Discovery Group markets Biotifx mainly through a distributor and dealer network rather than selling it directly to most end users.
Hydrogen sulfide forms when bacteria draw oxygen from sulfate after the dissolved oxygen already in the wastewater has been used up.
Bacillus bacteria added to an anaerobic wet well face the same oxygen shortage the native bacteria in that wet well already face.

Published September 24, 2026 · Updated September 26, 2026

Two starting points

Microbial Discovery Group (MDG) is a Bacillus fermentation manufacturer. For wastewater, its website describes the Biotifx line, as of September 2026, as Bacillus strains selected from an internal strain library for their ability to degrade a broad range of organic substrates, including fats, oils, grease and odor causing compounds, combined with a proprietary blend of micronutrients and biostimulants. The line spans a water soluble packet, an anaerobic digester formula, a mesh bag hanging block, liquid concentrates, and formulas MDG names specifically for ammonia, including a blend of classical nitrifying strains. MDG reaches most of the market through a distributor and dealer network rather than selling directly, and for septic and residential use it positions itself as a supplier to the businesses that sell to homeowners, not a direct to homeowner brand.

We start from the opposite end, and we say so plainly. DRP Accelerator is an inorganic compound that carries usable oxygen to the bacteria already living in your wastewater, and we add no bacteria and no enzymes of our own. Give those bacteria oxygen and they stop stripping it from sulfate, so hydrogen sulfide is not formed, and the same bacteria go on to digest the fats, oils, grease and sludge that anaerobic conditions leave alone. We dose it as far upstream as water and power allow, what we call AerobicShift, so the collection system itself starts doing biological work instead of only carrying the problem to the next point downstream.

Four things decide which approach fits a system: what each one adds to the water, when it acts relative to the moment H2S forms, what stays behind once it has worked, and what it costs to run in capital and handling terms.

At a glance

The table below sets Biotifx, as MDG’s own website describes it, against DRP Accelerator.

Factor	DRP Accelerator	Microbial Discovery Group (Biotifx)
What is added	Usable oxygen for the bacteria already living in the wastewater	Bacillus bacteria strains and a proprietary blend of micronutrients and biostimulants
When it acts	Before the sulfide pathway starts	After the added Bacillus strains establish and become active in the system
What stays downstream	Nothing; consumed as bacteria use its oxygen, no chemical additives left behind	The added Bacillus culture and nutrient blend, re-dosed on a schedule
Where it reaches	As far upstream as water and power allow (AerobicShift)	Wherever the packet, block or liquid concentrate is dosed by hand or a distributor’s schedule
FOG and sludge	Digested by the same aerobic bacteria already on site	Addressed by Bacillus strains MDG describes as selected for a broad range of organic substrates
Capital and handling	No capital purchase, a monthly service we run	Product cost, reordered through a distributor or dealer network
How it is measured	Baseline and follow-up readings as part of the service	Reported through MDG’s own C.A.T.E.R. service process
Markets it names	Municipal collection systems and treatment plants, agricultural lagoons and wash down systems, and oil and gas sites, dosed as far upstream as water and power allow	No specific industries named beyond its distributor and dealer network; positions itself as a supplier to septic and residential resellers, not a direct to homeowner brand

Microbial Discovery Group details come from its own website only, checked September 2026, and may change. Confirm with each company.

That table is most of the decision. If it already reads your way, contact us and we will show you the program on your own system.

Where DRP Accelerator is the stronger choice

Adding bacteria the right way means paying for a lab test, again and again, and we skip both. DRP Accelerator does not put anything living into the water; it gives the bacteria already there usable oxygen, so there is no new Bacillus culture that has to establish or compete with the native population before it does any work. Adding bacteria properly means a lab first has to evaluate what is already present, an analysis that costs money and has to repeat on a schedule; skip that and what we often see is that the added culture works at first, the lab work stops, and it dies off or has little effect. We only add oxygen, so think of it as supercharging the bacteria already there, working continuously. Our bacteria growth test measured that difference directly.
Prevention, not a culture that has to take hold first. MDG describes Bacillus strains that digest odor causing compounds and ammonia once they are present and active in the system. DRP Accelerator works earlier: with usable oxygen available, the bacteria already on site stop drawing it from sulfate, so hydrogen sulfide is not formed in the first place, not digested after it already exists.
FOG and sludge digested by bacteria that are already there. The same oxygen that keeps sulfide from forming supports the aerobic bacteria that break down fats, oils and grease and organic solids, work a packet or block dosed only for odor was never built to do on its own.
Upstream reach a packet or hanging block never gets to. We dose as far upstream as water and power allow, what we call AerobicShift, at a lift station, a headworks channel or the pond itself. A packet dropped into a tank or a block hung in a manhole only reaches the point where someone puts it, so a sewer line between that point and the plant keeps running anaerobic the whole way.
No capital purchase, a monthly service we run and measure. There is no inventory of packets, blocks or liquid concentrate to store and reorder on a schedule. We review the site, set a dosing point, and take baseline and follow-up readings as part of the service, the kind of record a case study can point back to rather than a distributor’s report.
Works in anaerobic and aerobic water alike. A wet well, a force main and a lagoon surface are different environments, and DRP Accelerator supplies oxygen in all of them; a Bacillus strain selected for one condition does not automatically perform in another, and switching product lines as conditions change is not something an operator should have to plan around.

Where Microbial Discovery Group has the edge

One distributor-sourced line spanning odor, FOG, sludge and ammonia. Biotifx includes a nitrifying-strain product, Biotifx NITRIFY, built for a specific ammonia problem, alongside formulas MDG names for odor, FOG and sludge, all sourced from a single supplier.
A mesh-bag block or dissolving packet for simple, no-equipment dosing. Biotifx BLOCK and Biotifx 40B are built for a lift station or a small tank where an operator wants to hang or drop a product in by hand, with no delivery equipment to install or maintain.
A path to becoming a bioaugmentation reseller. MDG’s distributor and dealer model gives a business that wants to sell a packaged product, rather than run a program, access to its training and technical support.

Where DRP Accelerator pulls ahead is any site where the fix needs to change what the bacteria already there have to work with, not add a new Bacillus culture and hope it establishes and holds its place against the native population.

Already running Microbial Discovery Group? Add DRP Accelerator upstream

Nothing has to come out before DRP Accelerator goes in. We dose it upstream of whatever Biotifx product is already running, set a baseline against your own readings, and measure from there. The bacteria already on site get oxygen they were not getting before, hydrogen sulfide has less sulfate to draw from, and the Biotifx product downstream has less work left to do.

We review your current data, work out flow and volume, and survey the site for a delivery point as far upstream of the existing Biotifx dose as water and power allow. The added product keeps working exactly as it did, only against a smaller problem, and the readings tell us and you whether the balance is shifting.

Many sites reduce how often they dose Biotifx, or retire it, once the readings hold; some keep both running because the site calls for it either way, and that decision stays yours, made against your own numbers rather than a distributor’s schedule. Gas monitors and confined-space procedures stay exactly as they are: adding usable oxygen upstream does not change what a wet well or a lift station needs for safe entry.

How to decide

Find where the oxygen runs out. A wet well, a force main or a lagoon bottom that has been anaerobic long enough to smell is the point worth treating first, whichever product ends up doing it. Walk the system and mark every point where dissolved oxygen is gone before deciding what goes where.
Ask what each product adds and what stays. Biotifx adds Bacillus strains and a nutrient blend; DRP Accelerator adds oxygen and is consumed as the bacteria use it. Ask what, if anything, is left behind once the job is done, and ask to see it in writing rather than take a distributor’s word for it. For the general case against packaged bacteria additives, see our comparison of bacteria additives.
Ask what happens to FOG and sludge. Odor control and grease and solids reduction are not automatically the same product line; ask directly whether the one in front of you does both, or whether a second Biotifx formula and a second dosing point will be needed later.
Ask what it costs in capital and handling, and how the result is measured. A standing order of packets, blocks or liquid concentrate is one kind of cost; a monthly service with no capital purchase is another. Ask how each vendor proposes to show the result, not just promise it, and how often that result gets checked once the program is running.

Ask both vendors for the same page

Ask Microbial Discovery Group, or its dealer, and ask us the same four questions above, on the same page, and compare the answers side by side:

What does the product add, and what is left in the system once it has worked?
Where does it act relative to the moment hydrogen sulfide, FOG or sludge actually forms?
What does the program cost to run in capital and handling, month after month?
How will you know it worked, and who is showing you the reading?

We will show you the dosing point we would use on your system, the baseline we would take before starting, and the readings we would bring back afterward, the same program we run for every customer, on a lift station, a lagoon or a force main, not a demonstration tank.

Contact us and we will walk through all of it on your own site. We say this in public because it is true whether you buy from us or not.

A note on this comparison

We wrote this comparison. Every statement about Microbial Discovery Group and its Biotifx line comes from MDG’s own website as of September 2026 and may have changed since; confirm current details with MDG or its dealer network before choosing a product. We are not affiliated with or endorsed by Microbial Discovery Group. Microbial Discovery Group, Biotifx and the product names built on it belong to their own owner. DRP Accelerator is the product we sell and the program we run; read this comparison with that in mind, and reach us any time through our contact page.

COMMON QUESTIONS

Straight answers.

Is DRP Accelerator a good alternative to Microbial Discovery Group (MDG)?+

Yes. Microbial Discovery Group's Biotifx line adds Bacillus bacteria strains and a proprietary blend of micronutrients and biostimulants, sold mostly through a distributor and dealer network. DRP Accelerator adds no bacteria and no enzymes; it is an inorganic compound that carries usable oxygen to the bacteria already living in your wastewater, so hydrogen sulfide is not formed and the same bacteria digest fats, oils, grease and sludge. There is no added culture that has to establish itself or compete with the native population, and the compound itself is consumed as the bacteria use its oxygen, leaving nothing behind. It runs as a monthly service with no capital purchase, built around a measured baseline and follow-up readings.

What is the main difference between DRP Accelerator and Microbial Discovery Group (MDG)?+

Biotifx works by bioaugmentation: adding Bacillus strains and a nutrient blend from outside the system. DRP Accelerator works by biostimulation: feeding usable oxygen to the bacteria already living in the wastewater so they do more of the work themselves, with no new organisms added. Bioaugmentation done right also calls for a lab to test what bacteria are already present and to repeat that test on a schedule, so what often happens instead is that the added culture works for a while and then dies off or does little; we only add oxygen, so think of it as supercharging the bacteria already there, working continuously.

Where does Microbial Discovery Group (MDG) fall short?+

MDG's own website does not state what happens to hydrogen sulfide before its Bacillus strains establish and become active, and an added culture dropped into an anaerobic wet well faces the same oxygen shortage the native bacteria there already face. Biotifx also has to be re-dosed on a schedule, whether as a packet, a block or a liquid concentrate, and the added culture and nutrient blend stay behind between doses. Adding a bacterial product the right way also calls for a lab to test what is already present, an analysis that costs money and has to repeat on a schedule, and without it there is no way to know whether an added culture is taking hold or dying off.

Do we have to stop using Microbial Discovery Group (MDG) to start DRP Accelerator?+

No. We dose DRP Accelerator upstream of whatever Biotifx product is already running, set a baseline, and measure from there; nothing has to be removed first.

Can the two run at the same time?+

Yes. Biotifx and DRP Accelerator can run at the same time while you watch the readings; some sites keep both running for as long as the site calls for it.

What happens to Microbial Discovery Group's Biotifx once DRP Accelerator is running?+

It typically has less to do. With usable oxygen available upstream, less hydrogen sulfide forms and less FOG and sludge builds up for a Bacillus culture to address, so many sites reduce how often they dose Biotifx or retire it once the readings hold against the baseline.

Is Waste Water Innovations affiliated with Microbial Discovery Group (MDG)?+

No. We are not affiliated with or endorsed by Microbial Discovery Group. Microbial Discovery Group and Biotifx are its own names and products; we describe them here only to compare the two approaches, sourced from MDG's own website.

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