http://mgur.com/a/SKLQh
Is this mustard algae? Originally my pool guy said this was permanent damage from trichlor tablets sitting on plaster. But after trying Vitamin C tablets and Trichlor tablets I noticed the trichlor made one spot disappear. If this is mustard algae I will need a higher shock then standard. I supect the ducks I FINALLY chase out of my pool might of brought it with them.
Is this mustard algae? Originally my pool guy said this was permanent damage from trichlor tablets sitting on plaster. But after trying Vitamin C tablets and Trichlor tablets I noticed the trichlor made one spot disappear. If this is mustard algae I will need a higher shock then standard. I supect the ducks I FINALLY chase out of my pool might of brought it with them.
