I have a 350 gallon plastic potable water tub that held saltwater for many years. It has been dry now for about a year, and I would now like to start using it again. It has hard crud all over the bottom. The problem is that the opening is only about 8 inches wide, and I can't get in to scrub it. I have tried a scrubber on a long stick, but it is useless because I can't reach the sides and ends, and it is impossible to apply pressure except straight down. Is there anything that is safe to use to totally loosen the crud and then can be flushed out so the tank is clean? On the other hand, the crud is all saltwater mix buildup mixed with normal dark dust accumulated over time, so would it be safe to just leave it there? I would rather clean it. IF there is no negative residual effect that can harm a reef tank. Thanks.
HOW TO CLEAN WATER STORAGE TUB
- Thread starter EASTERN INDIGO
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Pressure washer?
Muriatic Acid. It's wicked (don't breathe the fumes), but the only thing that works for me for a serious clean of a container with calcium build up. CLR just isn't as effective.
Why didn't my peabrain
I agree, and im going to try that. Any idea of the concentration and soak time?
Vinegar needs soak time. Muriatic acid works within minutes. Would try a 4 to 1 , water/acid. You’ll know in a few minutes if it needs to be stronger. Be careful where you spill it out after you’re done. Don’t want to pour it out on blacktop or patio blocks or concrete
Since most of the problem is usually on the bottom, I dump the whole gallon in the bottom first, and stand back. Let it do its thing for an hour or so, then add water, filling the container to get some cleaning on the sides. My container is only 30 gallons, so you may need a couple of gallons depending on how much surface area there is on the bottom of your container.
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FWIW, CLR is fine to use as long as it's rinsed off as you would for acids, etc. It does not contain anything that will leave "not fish safe" residue.
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