Quote:
Originally Posted by doch
What do you see in that picture that I don't? Everything was super happy before the crash. Are you talking about the hair algae? That wouldn't crash a tank would it? Phosphates were a little high (0.2 for a short while), nitrates have always been low (I just checked with my elos kit... clear as can be). At the time of the crash, the phosphates were at about 0.10. The before picture of the display was probably 2 months ago or so... things got WAY better after that, and then BOOM!!
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If you have algae growing in the tank - especially copious amounts - it will suck all the phosphate and nitrate out of the water so your kit can't detect it. If there is algae there is phosphate, can't argue that. Plus, when you added that frag tank on the algae bloomed in there like no tomorrow pointing to nutrient issues. Phosphate is a coral killer. Algae can help in a way by sucking the nutrients out o the water, but many algae also release toxins used as an offense tactic to help themselves spread.
The rocks are poorly designed for flow, and look like they collect a lot of detritus. I also notice that many of the rocks are from dry base rock, which I really don't like. I've seen algae blooms like this when using base rock so many times. Many base rocks will leech phosphate because they were alive at one point. Other base rocks are too dense to colonize anaerobic bacteria so have no ability to process nitrate.
It does not appear to be a safe place for SPS corals. I would suggest you at least use a siphon to suck out algae as you scrape it off the back glass (and anywhere else). If you're not using a filter sock, I would suggest you put one on the tank at least while you are getting the algae under control.