Built an UAS for my 145 gallon reef tank.
Been having very slow to no growth, all I've been getting is very stringy long brownish stuff.
Im using a top fin air 3000 and a cree warm white 25W led bulb inside metal reflector.
I run the light 12hrs a day( from 7pm to 7am),
I've attached pics for reference....any thoughts/idea would be greatly appreciated