Hot Tub Forum
Original => Hot Tub Forum => Topic started by: Bosmani on April 27, 2006, 08:43:50 am
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friend has an indoor pool with hot tub attached. The pool has a sand filter and the tub standard finned paper filter. He uses bromine tablets in both as well. He has black staining comming from the floor jets in the tub aand I feel it may be an algie? Had to rub off but will with a scrub. Any thoughts on cause or cures please?
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Does he use an algaecide?
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Dont think so, The usual PH up and down, TA , and sanatiser.
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Yuk.
I don't know the ramifications of having the hot tub and pool exchning water, but
With my outdoor AGP, for algie, I use an algicide (the black aglicide, can't remember the name, but a dealer will know it). Scrub the sides, and for good measure, he could replace the sand in the filter. ($30)
Clean the Hot tub filter and super chlorinate.
If this doens't do it, I think he's looking at a complete water change out.
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Thank you
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We used to have problems with "Kobalt" on older gel-coat spaswhere black stuff would seep out of pours in the shell. Only applies to older spas. If so drain and clean with acid / water mixture (kind of like acid washing a pool) and a great addition to you chemicals to stop it from coming back is a product called "Kobalt Killer" from ARM products
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Yes! Kobalt Killer is the bomb on the 'black plague.'
I have been in the biz long enough to have done battle with this nemesis many times, but as mentioned, not on the newer tubs.
And never on a HotSpring, since they don't have fiberglas backing.