Hi, I have one year old plaster and see what I think is black algae. I will be shocking tomorrow. My question is this...
1. Black algae is centered on rough spots in the pool...So is there a way to sand these rough spots down? It appears smooth but when you touch it, there is a bit of roughness. Just curious if this will continue to be a problem if I dont sand and I let the pool go in the winter.
2. The other unrelated question is Where does everyone buy their pool cartridges? I have monster ones and would like a spare set to soak in solution while the other ones are in. Thanks!
1. Black algae is centered on rough spots in the pool...So is there a way to sand these rough spots down? It appears smooth but when you touch it, there is a bit of roughness. Just curious if this will continue to be a problem if I dont sand and I let the pool go in the winter.
2. The other unrelated question is Where does everyone buy their pool cartridges? I have monster ones and would like a spare set to soak in solution while the other ones are in. Thanks!