The tank is 72x18x27 my light strip (6700K & 10,000K ) is only 8in. wide, thats why I think the light is not spreading out to allow for good growth. I do have a drop checker (Red Sea ) with 4 KH solution. PH is around 6.7-6.8 Pinpoint PH Mon. I have four in. of eco complete and an allglass top.
The fert amounts are as follows : 2tsp. KNO3 1/2 tsp. KH2PO4 1/2 tsp. K2SO4 and 75 ml. of plantex CSM+B 3x a week.
This tank has me confused , my other tank is a 110 gal.(48x18x30) it to has 384 watts and it has never had algea and the plants are doing well.