Moss problem in marine tank

[charles-n-charge]

Lately I've had massive outbreaks of moss-looking stuff carpeting my tank. I'm not sure what's causing it, or how to get rid of it. But it's now covering the entire tank and suffocating corals.

I also have a problem with those little nuisance anemones, but I'm not as concerned with those.

Can anyone help?


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[coyotethug]

What is youre source water? Are you using ro to make up you seawater? These problems witj turf algae are generally related to nitrates, phosphates, or overfeeding which causes both to rise. Give a detailed overciew of what you do with your tank and I will try to help.

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[charles-n-charge]

I make my own ro water. I feed very little in this tank. I do 10% water changes twice a month.

The problem began a few months ago. When I started this system, I was using dechlorinated tap water. But when I got an ro system, I completely restarted the system. Discarded all the old water and replaced it with new water, but kept the old rocks and sand and whatnot. I thought the problem would end, but it's now come back much worse than before.


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[wildman6809]

There could be a few problems. I would check the tds of your ro water. Are you using a good skimmer. Did you let your live rock cure good. Also how old are your light bulbs. Some of these could be causes of the problem. As far as solutions i would get a good clean up crew and a fish that will eat it maybe

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[coyotethug]

I have had customers tanks do similar things so lets try to deduce the issue.

First test the Total Dissolved Solids of your RO to make sure it is working well. If not then there is your problem.

Next make sure bulbs are newish, depends on type so let us know.

You definitely need a good clean up crew. For your algae issue lots of good hermits, lettuce nudibranchs, or bristle tooth tangs or a foxface. Combo of these is best. Problem is as they go to the bathroom the pollutants will enter the water column again and feed more algae. So you're not gonna like this but take as much rock out as you can and scrub the algae off with a firm plactic scrub brush. Rinse it in old saltwater and put it back. This will export your excess nutrients.

Check your skimmer and be sure it is a good one, or at least rated for a bigger tank than yours.

Lastly you need to do bigger water changes to export nutrients. If you only change 10% then after 2 months you only reduce dissolved nutrients by (.9, .81, .72, .64) 36% if you dont add any new through feeding which is unlikely) Changing 25% allows for (.75, .54, .41, .31) 69% reduction in same amount of time. 50% changes now would prove to be even more effective.

You can also set up a refugium to help with this. Its all a personal choice, some ways work better for different people than others. Let me know what youre thinking.

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