Hi all, I have a 30g. with 78w. of t5s (strong) par. It is a medium planted tank and at the moment has a very small bioload: 1 male betta and 6 little corys. A few of my plants, but not all are getting a small amount of algae on them. However, they are growing quite well. I am dosing carbon everyday and there are fertilizer tablets in the substrate. My tapwater nitrate level is low at around 5. I have no phosphate kit to test that level. A moderator advised adding liquid nitrates to the tank which I will begin in a few days (won't add phosphates till I know their level). The photoperiod is about 7 hours. I also am using a nano powerhead now so that the plants gently sway. Sooo, does anyone have any ideas as to what is out of balance because I'd like to correct it before it gets out of control? Thanks.