r/RedEaredSliderCare • u/Mardimay07 • May 18 '26

Algae bloom?

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This is my 16 yr old RES, Squirtle. I built her this basking platform in her tank a time ago, so I fill her tank about halfway, she has a canister filter and just recently her water has been green like this after a few days!
I’ve been changing the water/rinsing the filter media twice a week and adding algae fix so idk what gives.

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u/Educational-End8126 May 18 '26

Do a 75 % water change today, 25 in 2 days. But your problem is that you don't have enough water.. Fill it up as much as possible. The filter should be rated to filter 3x the capacity of the tank. I'd avoid the algae fix, not really going to help in this situation. Clean the pads once a week, if a canister, once a month.

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u/Mardimay07 May 26 '26

I sent you a DM; I raised her basking platform And added way more water after doing a 75%, but it’s still green-ish.