The maxigro series
nutrients are good as well. Their not the most economical like the two I mentioned earlier, but within my threshold of $0.15 cents per gallon. Depending on where you get it, they will probably be between $0.10 and $0.15 cents per gallon. They don't really say how many gallons it makes, but I have measured it out myself. While I don't remember exactly, and I don't know where I put the sheet, but I think the small package makes about 93 gallons of full strength
nutrient.
The directions say use 1-2 teaspoons per gallon of water for both Gro and bloom. When using them for continuously fruiting plants I mix them 50/50, 1 teaspoon of each. But I don't always use it full strength. Like I mentioned earlier, mixing them on the weaker side is often better.