Frogspawn dying phosphates too high?

[Sleeping Giant]

Thank you just trying to help him get c some good water for his reef tank i can remember when i didn't have a Rodi thought i could just use prime. I was wrong..

I use prime, have for 12 years, no issues

 

[Pistol Peet]

I also use prime but not to try to condition my water I use a r o d i unit for that I just use prime if I'm quarantining fish and stuff and needs a control the toxicity of nitrates and ammonia