I've been searching the forum for sometime trying to see if anyone has dealt with what I'm dealing with, but haven't found much.
I've been getting patches or layers of black, maybe algae, under the sand bed. I'm not sure what it is. It's not slimy. It doesn't start on top of the sand bed. It just starts to clump up and eventually raises up becoming noticeable. When I vacuum it out, it comes up like a sheet of paper. My water parameters are great. My pH sometimes creeps up. I'm not completely sure why.
And, I'm not sure if my lights are on too long. My blues start ramping up (apex controller) around 730 and are on completely by 9 and are turnoff at 9pm. My whites start ramping 30 minutes later for 2hrs and then stay on till 830p. My high noons (equivalents to MH) come on for about 5hrs. That's my light cycle.
I'm running a brs carbon/gfo reactor and a skimmer.
Any ideas what the black stuff is?
I've been getting patches or layers of black, maybe algae, under the sand bed. I'm not sure what it is. It's not slimy. It doesn't start on top of the sand bed. It just starts to clump up and eventually raises up becoming noticeable. When I vacuum it out, it comes up like a sheet of paper. My water parameters are great. My pH sometimes creeps up. I'm not completely sure why.
And, I'm not sure if my lights are on too long. My blues start ramping up (apex controller) around 730 and are on completely by 9 and are turnoff at 9pm. My whites start ramping 30 minutes later for 2hrs and then stay on till 830p. My high noons (equivalents to MH) come on for about 5hrs. That's my light cycle.
I'm running a brs carbon/gfo reactor and a skimmer.
Any ideas what the black stuff is?