Please help

[lordicon]

here is a little better pic

[Aquattro]

Look up Dinoflagellates.

[GoFish]

Do you have a TDS meter to test the water you use? RODI or tap?

[lordicon]

i been using ro/di since i started my tank. And about 6 months into the tank i have been dealing with canyo off and on too

[GoFish]

And have you tested it? I was getting RODI from a grocery store for 6 months and when i bought a TDS meter checked and it was 2, and then checked the system at home I picked up recently and it was 5 until the filters were flushed and new resin added.

[lordicon]

yep tds out is always 0. i sometimes wonder if my led lights are the problem? i did my own from rapid led and wonder if i have the wrong color spectrum. i have cool whites royal blue, and uv and green

[craigwmiller]

What percentage is your Green of your total LED count, and what percentage are you driving it/them?

Same question with UV

[Bill]

This algae looks familiar and shows up in my tank on occasion. In fact I have some in my tank right now but it's starting to disappear.

This might be a long shot but are you running a calcium reactor? If so, you may need to dial it back or better yet, just use kalk for a while. When running the reactor, effluent should go directly to the skimmer to remove excess CO2. This made noticable difference in my tank.

Get a silicate test kit and measure the fresh made saltwater. I don't think the TDS can detect silicates. Until you know your water is free of silicate, stop the water changes for a while to see what happens.

Use phosphate free carbon and replace it often. Also use GFO. Although your PO4 test shows zero, the rocks may be leeching some. I used lots of carbon - like 2 cups for 200gal. to remove dissolved organics.

Try to cut back on feeding - this one really helped me. Also, remove any filter socks or sponges from the system.

And, if possible, remove the rock and scrub algae off - in a separate container of saltwater. This way, when it dies, it wont add the nutrients back in the water.