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Capsle
02/12/2017, 07:31 PM
Hello Reefers,

Its been a few months since my last post. Been enjoying the hobby and continually learning and researching everything that goes on in my tank.

My tank is 7 months old. Everything has been pretty close to spot on since day one. I have had not real algae issues and surprising enough I have been able to keep my water parameters stable. Water changes are done every 2 weeks, approximately 40%.

My water parameters have always been the following
Salinity 1.025
PH 8.1
NO3 5-10
P04 less than 0.03
Ca 450
Mg 1350
Alk 9.3

I have always used RODI water and Red Sea Coral Pro salt.

I noticed about 3 weeks ago, that I started to have a little cyano growing on some rock work. I cleaned it up, vacuumed it out and increased the flow in my tank slightly (turned my grye up 2 points). The next week it was back.

So i started reading up on it and fell upon the Redfield ration and asked about it on a saltwater group I am in on Facebook. A few hobbyist mentioned that my Nitrate to P04 should be about 10:1 ratio and keeping this ratio will help with all algae types. So I removed my GFO and let my P04 creep up.

Well, that was not the way to go. Nitrates are now at 10 and P04 1. The cyano has spread like wild fire, and although it doesn;t hurt anything, it looks like crap.

I am currently in day 3 of a 5 day blackout that I am doing. It has gone mostly away. I have started running GFO again yesterday and I will do a 50% water change at the end of my 5 day black out. I plan on getting my P04 down to acceptable levels again.

Any other information would be helpful.

scubadan206
02/14/2017, 10:17 AM
A diluted mix of tank water and hydrogen peroxide will work. Use about a quarter to half bottle to one gallon of tank water.
Use a turkey baster and blast the sand and rocks with the mix. Be careful aiming at your corals though.

RobZilla04
02/14/2017, 12:26 PM
Is this a duplicate thread?

Edit: It is duplicate. http://reefcentral.com/forums/showthread.php?t=2624042

Capsle
02/14/2017, 02:32 PM
Is this a duplicate thread?

Edit: It is duplicate. http://reefcentral.com/forums/showthread.php?t=2624042

Yes it is. I had no responses on this one so I posted in New to the Hobby.

hann1bal
02/14/2017, 04:32 PM
Had the same problem after 7 months. Trust me - increase water movement and do very regular water changes while siphoning out as much as possible and it will be gone in no time. Blackouts can help but Im sold on water changes and increased flow!