I’m going to pick an ink bird and I want duel heaters. Right now I have a 150w Eheim on a 29 gallon. I want to go with 2 heaters for redundancy. What size should I get if i’ll be running 2? Right now I have 2, but one is set about 75 degrees and should only cut on if the other one fails. It’s never running at the same time like I am planning to do with the upgrade.
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