I have a 20 gallon high reef with zoas, acans, duncan, candy canes and blastos in the lower portion of the tank and birdsnest, acros, hydnophora, setosa, digi and stylo in the upper portion of the tank. I keep my parameters in range, have decent flow but my corals aren't growing as fast as id like. Currently I am running 3, 10+ year old leds that are 20 watts per bar (Vertex aquaristik illumilux 300 mbi 20 watt) and I suspect that could be the problem. I am looking into getting a Nicrew Hyperreef Gen 2 and I was wondering if I should go for the 100w or 150w, peoples experience with these lights on nanos and any par levels you may have tested on your tanks. Thanks.
