High Phosphate removal
I usually just use the basic water testing kit, but I was in need of a new kit, so I decided to add some extras this time as my tank has been giving me grief. Upon first test, my phosphates are off the chart (10+). My tap has zero phosphates. Upon testing immediately after a 70% WC today, the tank is still at 10+. This likely explains the problems I have been having with certain plants as the phosphates outweigh my other nutrients by quite a bit.
I had hoped the WC would lower my phosphates a bit and I could adjust other nutrients. But since it didn't budge, I would like to use a phosphate remover to get back on track. I don't want to spend an enormous amt of money, and there are a wide range of prices. What do you recommend? It is a 20g for what it is worth. Is adding media better than liquid forms?
I understand many of the reasons for which this happens, but the tank is super clean. I did have an episode a couple months ago in which I accidentally switched the EI NO3 and the PO4. I was assured it wasn't a huge issue, lasting affects weren't mentioned. Could this be the source of the problem? Are there any precautions I should take with my canister filter, or is just adding a media bag of the remover enough (not sure if I should toss anything...I'm assuming not). What if I go the liquid route?
Also, would high phosphates cause fish to flash? Most are fine, but there are a couple having issues.