Calcium removal?

[BKLYN651]

Need to clean my outtake. I’ve just been wiping down and using toothpick to reopen holes better. Any advise on better ways to clean it? Soak in vinegar or something else?

 

[Retro Reefer]

I just started using citric acid for calcium removal and it works fantastic..

Citric Acid Aquarium Equipment Cleaner

Quickly and Effortlessly Remove Coralline Algae from Pumps & Powerheads. Over time pumps, powerheads, heaters, or any other piece of equipment in your aquarium can start to have mineral deposits form or coralline algae build-up, which can hamper the performance. Keeping your equipment clean will...

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