Need advice on best pool test kit within reason. I have an above ground 18x52 Intex with 2150gph sand filter and SWG, and I’m not sure paying upwards of $90 for the Taylor k2006 is worthwhile for an above ground pool. Is there a more affordable Taylor kit, or alternate brand, that would suit my needs / tell me the basics? Which readings are most essential for my setup? Currently trying to lower ph and get an accurate cya level, both store bought test kits (Clorox and hth) I have are useless. Thank you in advance!