I use it in alot of my tanks. I still feed massivore to my polys but use the other pellets, flake, etc in my other tanks. Not that this will be relevant to most here, but his catfish pellets have 16% calcium which is great for invertebrates. He is also in the process of formulating a new veggie stick/catfish pellet with extra calcium fortification geared specifically to fw snails <not any other pellets out on the market which do this>. He is a great guy to deal with and is always willing to answer questions about his foods. He also sells alot of the bulk ingredients for making your own foods at a very competitive price. I have not used his cichlid pellets (have some in the fishroom, waiting ot be finished with my hikari first), but do use catfish pellets, veggie sticks, micro pellets, fw flake, spirulina flake, and color flakes. I like them all. My only complaint (with my smaller tanks) is that the bags are big. I typically break the bags down into smaller bags and put them in the freezer until I am ready to use. It would be nice if his bags were resealable. For the price and quality of ingredients, I am overall very pleased.