Find a fellow reefer who you can swap water samples with. You can both test your own water and each others then compare results. I have a hard time trusting most LFS, a lot of them are entirely motivated by profit.
Find a fellow reefer who you can swap water samples with. You can both test your own water and each others then compare results. I have a hard time trusting most LFS, a lot of them are entirely motivated by profit.