Hello, I wanna post some pics of my system to know your opinion in general, about my aquascape, my equipment, any modification anyone would suggest. & I'm having a problem with my nitrates level, I've finished cycling the tank, but didn't add fish yet & my nitrates level is 40 ppm & as you can see in the next pics that I'm having in my sump live rocks & dead rocks as well as a mesh bag with Seachem Denitrate, so any suggestions to lower them??? P.S. the denitrate was added 3 days ago but no changes yet. Another issue, I'm having something on one of my live rock & I dunno if this is Aiptasia or not, any opinions? And if it's Aiptasia, what can I do?