Maybe 2 of those lights? With 4 t5 bulbs going am I going to stress my Cardinal tetras to death?
I was looking through some old posts and people keep commenting on how expensive flourish excel is. It looks like the dosing is 1ml per 10g i can get 500ml for about $8. If that is true it should run me about $.04 a day, am I missing something?
I would rather hold off on CO2 for a bigger tank and I don't want to mess with a DIY unit. Not if I can do the same thing with flourish for 4c a day or 10c or 50c for that matter.