We bought a house with a pool and need a little help. I'm not sure where to start but our test kit will be here tomorrow, TF100. Our pool is in ground cement with vinyl liner, odd kidney shape about 21000 gallons. The water in the deep end is cloudy and was starting to get green. The previous owner used the pucks in the filter and shocked when it got cloudy with no testing. It started to get a slight green to it Monday so we bought se shock stuff and added enough for 50000 gal pool. It helped but is still cloudy in the deep end, I'm waiting for our test kit before I add anything else. I'll follow up with results tomorrow. Thanks for your help.