First off, opened the pool in April and installed a new pool liner at the same time.
Since then we've been constantly fighting algae. Here are the specifics:
- In ground chlorine vinyl pool "octagon" shape about 20/30 feet by 10/12 feet (I know..i need to measure the dang thing) and its 6ft at the deepest, built probably in the late 1980s
- sand filter, multiport valve, rainbow 320 chlorinator, pentair pump strainer/basket
- currently using 'in the swim' 3" tabs & baking soda for chemicals (although just bought a tub of arm & hammer 3" pool tablets)
- pool is in middle TN and lots of trees around it so it gets 1/2 in the shade by 3pm but probably only a small handful of leaves in the bottom daily. i can net it and clean the skimmer once every other day and that doesn't get out of control.
- pump has been running constantly since April 24/7
so through a PAINFUL learning process, i've discovered the pentair pump basket was old/brittle and was breaking off (and allowing small stones) to pass into my impeller. i've finally learned how to take that apart, clean it and get it going (the green stuff coming out of my pool jets afterward told me all i needed to know about the fact the impeller wasn't running.
solution: bought new pump basket and threw the old one out.
second problem; i wasn't properly loading the chlorinator; tabs weren't melting. finally watched a youtube vid & realized i wasn't letting the water fill up before putting the lid on so the tabs were just hanging out not getting into the water.
solution: finally learned how to 'open' the chlorinator and feed tabs (i always have 3-4 in it) and see them melt. also for good measure bought a new little black screen (one i had was kaput) so the tabs sit on top of it.
third problem; wasn't properly backwashing and the gauge is broken so i cant see pressure.
solution: learned how to properly backwash and ordered new gauge (but hasn't arrived yet)
So, here's where I am:
- pool looks more clear/blue than ever..but gets green on vinyl EVERY DAY and i have to brush it off and it comes right back
- FC seems to be a bit high..in the 2-4ppm range but i'm so afraid of the algae taking over again i'm keeping it too high i think
- just about out of shock..i think i misused it by only putting a small amount (one scoop) in just to 'help out'. clearly i know nothing here.
- alkalinity is on point.
- PH is low..in the 5 range and i've emptied the last of my arm & hammer into the pool so i need to pick some up to get it back to 7
what are your suggestions to get on top of this? I'm trying not to leech off the community here and figure this out on my own, but I need to know what the best algaicide or technique to keep the pool up. I'm looking at the reviews on amazon for HTH "green to blue" and coral seas "green to clean" but don't want to waste money getting the wrong thing and extending the algae problem.
pool came with a broken polaris 340 (old model) and a vacuum hose too short for the pool so i've ordered a 'kreepy krawler' generic vac to help with the pool.