Waymon, I assume that your water quality is such that you have to fertilize. If so, take the inexpensive route. Find liquid farm fertilizer. It is dirt cheap. I believe you have to have a good phytoplankton base unless you're pro fish farmer who has it all worked out. I just can't understand raising fish without a good forage base. Heck, I've had seed and fertilizer dealers give me 5 to 20 gallons for nothing. It works the same as the pelletized stuff.