Hello everyone!! Nice to be here!! We bought a house and it came with an above ground pool, pool guys said 18×33 I do believe!! We know NOTHING about pools! We bought test strips at our local Walmart, that you test and send in a picture, and they reply with what you need. I feel like these are inaccurate. I tried to vacuum the pool today, and that didn't work. I'm getting frustrated, like I bit off more than I can chew with this purchase. Beautiful pool, but lack of knowledge is making me think it may be coming down!! ANY helpful info is appreciated!! Thanks for reading!!!