Is Big Al's liquid fert. enough?
I'm trying to start my first planted, low light 20g, but my plants in spite of some growth, are mostly not fairing so well. I dose 1/2 capful twice a week. It recommends 1-2 capfuls depending on how planted the tank is, but I read that the recommendations on store bought fertilizers are usually over dosing. I also put 1mL of Flourish Excel every other day. This is only to prevent an outbreak of algae since I don't believe it is required in a low light tank.
My plants are water sprite, dwarf hairgrass, and red wendtii. It is pretty sparse in my tank right now. The one that seems to be doing the worst is the water sprite. I ordered them through mail, and they came in ok condition (except for my glosso in my nano that I had to nurse back to health). It has been a little over a week since they're arival.
Lighting on the 20g is 51watts (one double strip, one single) 6700k fluorescent.
My nano, which has glosso, petit nana, and dwarf hairgrass seem to be doing ok. It's a 2.5 with 11watt CF.
I forgot to mention, I have coarse sand for both tank substrates, and I do 50% water change weekly on both.