help # diatoms

Any idea what this could be nitrate 10 point of sale I'm not sure but tank has been up for 10 months now and I can't tell if it's dino,cyano or is diatoms coming back. Main problem is on the right side of the tank on the rock work in the close up pic there not bubbles that's sand on the brown algae

So my tanks been cycling since may 30, after 3 weeks my parameters were perfect and i added life, last week i added a hammer and an acan before installing my new AI Prime 16, i run a schedule where its at max blues for about 4 hours before slowly dimming down, im not sure if the high intensity...

So I’ve been battling some issues for a few months now and I need so help. I’ll start with my set up 140 gal tank with a sump reefmat 1200 and a octo skimmer. Dosing afr a very small amount daily and a ato. with a Magnificent Fox face, 2 storm clowns, and a dwarf flame back angel. 1 holy grail...

Hello! I am a new reefer and recentlyish got this 36 gallon tank from a friend. The tank was kept in poor condition. It had so much algae you could barely see it and the nitrites and nitrates were off the charts. There was only lonely fish in there and only 5lb of live rock. I moved everything...