When I was ironing things out my first few months of growing I was using Schultz from WalMArt. I was using the orchid formula, I think. Can't remember...
There is a 'Bloom Plus' formula available. I've never noticed the catus one, but trust Zandor if he says it's closest.

I love the alaska fish fertilizer and was psyched to see them selling it.

Other goodies you will find at WalMart:

They now carry SuperThrive. It's another supplement, not a stand-alone fertilizer.

Serenade- This is an organic -whoo hoo! - fungicide. It's a strain of bacillus subtilis, and treats certain fungal diseases

Fungicide 3- It's a neem oil product that is effective against mites, some types of fungus, and many insects. It's not the best; Green Light brand is much nicer, and OMRI listed, buyt hey what the heck if you want to be cheap... Neem oil is like the best stuff ever, just be prepared for the stank. Phee-ew.

My very best recommendation though if you don't have a hydro shop nearby and don't buy stuff online, check out your local farmer's supply, like Agway. Our local one carries a full line of organic supplements and soils.