I started a 90 gal
tank with 100# live rock, 60#(2" bed) aragonite oolite with 20# agralive sand to seed it. I have a Little Giant pump with a sump/refugium with live sand & lr
rubble and red grape calurpa (sp) also have pods
already. I also have what I think is a Euro Reef RS80 protein skimmer. I've had the system running now for 2 weeks and did my last 25% water change last night. I have had the lights off untill this week and now I am starting to get brown diatoms/algea on the live rock. My lighting isn't the greatest at the moment with 2 - 36w half daylight/actinic and then 2 - 36 w actinic. I have another light but am waiting for the bulbs to come in 4 - 36w 10,000 daylight. My water parameters are as follows..
Ammonia 0; Nitrite < .05; Nitrate 0; phosphates 0; ph(high) 8.6; KH
(high) 18(red sea test kit); Calcium 280
Is it possible because I have so much actinic lighting this is causing the diatom/algea?
How do I lower the PH and KH
What do you think about the lighting?
Any info on my specific setup would be much appreciated!!