I'm sorry I think everyone missunderstood me. A pond pump sits at the bottom of the tank just circulating the fluid, it doesnt add any air at all. The reason for the pond pump is to keep the yeast from settling on the bottom and to prevent a "hot spot" when using fish tank heater as I'm using. I guess I should have been more descriptive.. My worry is that the pond pump will "grind" up the yeast as it goes through the impellor. However, I just checked my wash and its going off like crazy! So I guess all
the yeast cant be ground up yet lol.. Thanks so much for all the responses though, forums are such a fantastic way to share information. I hope that I can return the favor some day
Currently I have two 70 litre batches going, both of them are identical except for the yeast used. For one I used regular bakers yeast and for the other I used Lalvin champagne yeast. I wanted to see which one would finish with a higher % for the dollar spent. The 230g bakers yeast cost me 8.00 Cdn and I used 8.00 dollars worth of Lalvin which is 8 small packets or 40g of yeast. I'm sure one of you have already tested this but I'm a hands on "learn the hard way" kinda guy
I'll be sure to post my findings next week. For anyone that is interested heres what I used in the wash..
16 kg white sugar
1 small can tomatoe paste
3 tablespoons of Spagnols yeast nutrient ( DAP, Yeast hulls, Vitamin B complex, Magnesium Sulphate )
16 tablespoons of Realemon concentrated lemon juice to bring the PH to 6.0
The SG at the start was 1.07
I pitched the yeast directly on top at 33 degrees celcius.
I have a fish tank heater in the tank holding the temp at 30 celcius
I've got a tiny pond pump running on the bottom of each tank
My starting PH was 7.0 so I kept adding lemon juice untill it was 6.0
I'll let you guys know how it turns out.. Thanks again for all the help, I appreciate it.