I have a tiled pool. The grout in the joints between the tiles has started to turn black in places, I am assuming this is some kind of Algae. If this assumption is correct what can I treat with. I have been advised by a pool store that they can sell me a solution that will clear this problem over a period of a few months, the product costs approximately $64 a litre and would need to be applied every 7 days. Do you know of anything that would be better?
On other problem I have with the tiles is that some have cracked and need replacing. Please do not fall over laughing when I ask, is there any sort of compound, glue,cement etc., that can be used to fix the tiles without having to drain the pool.
Sorry I have to ask that but draining and re-filling my pool would be a very expensive operation.
Regards to all