The Planted Tank Forum - View Single Post - Algae after switching nutrients and co2 reg
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post #3 of (permalink) Old 05-07-2019, 01:52 PM
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Originally Posted by Warpaint View Post
Hey all, first time poster. I'm about 3 months into this hobby and am running a 20 gal long high tech planted tank. I was dosing pps but decided to start dry dosing EI. Before switching I was away 3 days and wasn't dosing at all and had cut co2 while waiting for a new regulator to arrive. When I returned and made the switch I noticed some small black growth on my rotala leaves. Right on the edge. This was last week and the stuff is quickly beginning to spread. It doesn't look like BBA to me when I refer to it online however I am still largely inexperienced and am seeking some identification and advice. Thanks allAttachment 881379Attachment 881379
It's hard to say from your statement what is causing your issues. With most new tanks the #1 culprit is usually light. You also stated you stopped dosing and cut co2, did you cut back on your lighting during this time. What kind of light are you running and for how long? What are your co2 levels? Need more details.

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