changing pool water

[chem geek]

You should really get yourself a proper test kit. The best to get would be the Taylor K-2006. Most importantly, you need to get chlorine into your pool. Unfortunately, if your CYA level is now too high, you'll need a lot, but until you get your good test kit just add a bunch of chlorine to have at least 5 ppm FC or more which will max out your inexpensive test kit. Use The Pool Calculator to calculate dosages and check your water as the chlorine may get used up during the day or fighting algae.