Dosing Yeast

ksed · Oct 15, 2016

Skip through this video to the 10 minute mark, Jamie mentions he is dosing yeast for bacterial growth.
Wondering if anyone has a dosing schedule like vinegar or vodka.
Also has anyone tried this carbon source?

Cory · Oct 15, 2016

The video doesnt snow for me. I wonder if yeast would produce Co2 in the tank?

Lots of people use vinegar in limewater.

ksed · Oct 15, 2016

Cory · Oct 15, 2016

It sounds like hes cultivating yeast and dosing it no? That would eliminate the co2 issue and im not sure if they can survive in saltwater.

ksed · Oct 15, 2016

Not sure how , but would be interesting to know why he has chosen this carbon source.

rockskimmerflow · Oct 15, 2016

I agree it sounds like he's using it to grow extra hetertrophic bacteria much like a carbon source from the video. Not sure if it works by the same mechanism as vodka, sugar, or vinegar though.

I know yeast has been used by others as a sort of phytoplankton analog to boost the microfauna within reef systems. It seems to be effective at causing blooms of copepods and subsequently amphipods within closed systems. Regardless of how it works, it makes sense that Jamie would want the extra, bacteria, phyto, zooplankton, etc helping feed his corals enough to induce spawning readiness. Yeast is likely a quite inexpensive item with which to feed large volumes of microfauna.

jsker · Oct 15, 2016

I tried the yeast but small amount to get rid of diatoms and it did not work for me. I dose bio pellet for my carbon source

Cory · Oct 15, 2016

Well this carbon source would be full of vitamins. I remember eating brewers yeast for people is very healthy superfood.

Randy Holmes-Farley · Oct 16, 2016

Cory said:
The video doesnt snow for me. I wonder if yeast would produce Co2 in the tank?

Lots of people use vinegar in limewater.

It would be no different in that regard than bacterial consumption of the organics present.

ksed · Oct 16, 2016

From doing some reading brewers yeast is high in chromium, which I really don't know if that is a good thing to add to the tank. Also on another web site it mentions to be careful in using brewers yeast as a supplement as it will alter the strain of bacteria in your gut, which can further cause problems.
A safer alternative would be bakers yeast.
But if this serves as the same purpose as other carbon sources then there is no real benefit.

Salty1962 · Oct 16, 2016

Yeast is only good for growing Cyano, I would not use. I just use a BP reactor and it works pretty well.. JMO for what's it worth.

Cory · Oct 16, 2016

Salty1962 said:
Yeast is only good for growing Cyano, I would not use. I just use a BP reactor and it works pretty well.. JMO for what's it worth.

Why do you say it grows cyano?

Salty1962 · Oct 16, 2016

Cory said:
Why do you say it grows cyano?

The cyano feeds off of the yeast. That's why you see many products list the ingredients as yeast free. I tried it a few years ago and it took me months to clear the cyano.

71xlch · Oct 16, 2016

It's funny as I have seen many dosing yeast to rid diatoms etc. Vivids video on cycling their 800 talks about it.

Randy Holmes-Farley · Oct 17, 2016

Just to clarify, while it may or may not be desirable to dose yeast for many different reasons, it is quite different than other forms of organic carbon dosing, and I wouldn't necessarily expect it to reduce nitrate and/or phosphate the way dosing something like vodka or vinegar does because it is bringing in a large amount of N and P at the start.

Randy Holmes-Farley · Oct 17, 2016

Salty1962 said:
The cyano feeds off of the yeast. That's why you see many products list the ingredients as yeast free. I tried it a few years ago and it took me months to clear the cyano.

Cyano doesn't eat yeast, but it might well consume the organics that come from dead and decaying yeast cells.