You can buy, borrow, or rent a par meter.Is the par meter something to buy? Do you think it was possible for a LK to drop when I switched over to rodi water?
Lots of people don't bother but when they come across problems and can't figure it out, it is another tool. Check your lfs or another reefer or club. BRS sells them and can be returned for a stocking fee.
I bought the parwise recently, love it. Won't use it much but when I do it comes in handy. https://www.par-wise.com/
RODI is only going to help. Not using RODI could have been the problem.
LPS can have problems but not physically show up for weeks later. What type salt are you using?
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