Join Date: Jan 2013
Location: The Boonies, Arizona
The potting mix has poultry litter, but does not have manure. It looks like you have the soil, which does have manure. The soil recommended by Oldfishlady, and by Diana Walstad (who came up with the idea of NPTs) is the potting mix. Personally, I would not use any soil that has manure in it- this is going to be a very hot soil. If it were my only choice, I would mineralize this soil first to break down some of the organics. Google 'mineralize top soil' and you'll see how to do it. Basically, you wet the soil and let it dry out repeatedly. Or, you could also do a 50/50 mix of MGOC soil and something with a high cation content, such as flourite. The flourite helps to keep the ammonia released from the soil within the soil.
I have two dirted tanks, one with the MGOCPM and one with a mixture of a mineralized cheap top soil (no ferts added, no poultry litter at all), dirt from my yard (which is a clay loam soil) and plain, non clumping kitty litter (this also provides cations). The one with MGOCPM, I have had ammonia issues with for a month. The other one has been doing great from the get-go. Personally, I would never use the MG again- even with only the poultry litter, it is still too hot.
That's just my opinion. I know it works for many, including Ms. Walstad (but she could make anything grow in any substrate and still have it be fish-safe). Heck, I once saw a thread on another forum where a guy mixed dog poop in with his soil and it worked.
"People have forgotten this truth," the fox said. "But you mustn't forget it. You become responsible forever for what you've tamed."
-Antoine de Saint-Exupery