Cyano showing up.

endlessrealm · Dec 5, 2022

Iv had this tank for 4 months now. And iv had nutrients crash before where i hit 0 phosphate, and 0 nitrate. So after i started dosing those two. My corals and everything looked much better. Till dinos showed up. But it got way better in 3-4 days started to retract. But now i woke up to cyano showing up on rocks. What should i do? Phosphate is 0.08, and nitrate is 8.6 according to hanna. Salinity is 1.025, and temp is 77F. Alk is 7.4 with tropic marin pro salt.

Crustaceon · Dec 5, 2022

Nothing. Let it run its course. You can turkey baste the rocks daily if you like, but it's best to avoid adjusting water chemistry or dosing anything. It'll likely work itself out in a few weeks.

endlessrealm · Dec 5, 2022

Crustaceon said:
Nothing. Let it run its course.

What if i started to being agressive and cover my corals and kill them?

Crustaceon · Dec 5, 2022

endlessrealm said:
What if i started to being agressive and cover my corals and kill them?

You can use a turkey baster on your rock work daily.

Hot2na · Dec 5, 2022

algae scrubber and be patient.

djf91 · Dec 5, 2022

endlessrealm said:
Iv had this tank for 4 months now. And iv had nutrients crash before where i hit 0 phosphate, and 0 nitrate. So after i started dosing those two. My corals and everything looked much better. Till dinos showed up. But it got way better in 3-4 days started to retract. But now i woke up to cyano showing up on rocks. What should i do? Phosphate is 0.08, and nitrate is 8.6 according to hanna. Salinity is 1.025, and temp is 77F. Alk is 7.4 with tropic marin pro salt.

In a new tank like that I would say try to keep detritus buildup to a minimum. Blow off rockwork daily with a powerehead or turkey baster and vacuum sandbed routinely.

air_run · Dec 5, 2022

While I agree with waiting it out and blowing it off of rocks, if it is driving you nuts you can also manually remove it every few days. I took .25" clear acrylic tubing and cut one end at a 45 degree angle and attached a silicone hose to the other side to make a small siphoning tool. Every few days I just siphoned the Cyano into a filter sock in the sump or a bucket and returned the water.

Also, you can try @SunnyX method of dosing Microbacter7 and Calcium Carbonate. See below:

Extreme Water Clarity and Cyano Eradication, Made Easy!

Edit 10/092023: Note that I have tweaked the formula a bit. You can find an updated video here: Coral Snow Link: Coral Snow Hello all! I have been reefing now for about 25 years, and over those many years I have picked up many tips, tricks, and best habits/practices. From a hobbyist and...

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