Hope this doesn't post twice, sorry if it does, but it did something funny a minute ago when I submitted it.
I have a lot of brown algae (diatom algae???) in my tank. I had it before and did a water change after brushing it off the rocks with a little scrub brush. I got it again when I went on vacation and someone else was feeding my fish. I brushed the rocks and removed the algae from the front and sides of the tank , then did a water change to remove it once it was in the water, but it came back faster this time, like in a week, as opposed to last time, which took much longer. I left some of the algae on the back for the snails, maybe I should have removed it all.
I checked nitrates and other stuff. Nitrates went to 40 while I was away, but they're back to between 10 and 20 now and have been, so I don't know if it's normal to get this brown algae so often/quickly.
Forgive me if I'm petty, but I really prefer to look at the purple crystaline and red algae, and the cool green stuff, not this icky brown. Please advise. FYI
, protein skimmer not hooked up yet, will that help this problem?
forgot the picture, here it is.