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This keeps growing and attempting to block up the overflow.

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Anyone have any idea what this is?

I’m not sure if I should save it and put it in the sump or keep throwing the stuff away.

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  • Tim
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  • Tank Thread:'-tanks-6/tims-first-and-last-upgrade/msg42396/#msg42396

Reply #1

Hi it looks like ulva intestinalis, it likes high flow so probably why it’s growing in your overflow. It’s normally used in algae scrubbers.