DrTim's Aquatics Re-Fresh for Reef Aquariums – 100% Natural Fish Tank Sanitizer & Revitalizer Conditioner Solution Fresh, Crystal-Clear, Sparkling Water -16oz

Very happy with this, helps keep my marine tank clean, keeps red cyno at bay, hasn’t harmed any inverts or corals.

Let the power of bacteria and carbon dosing do the work for you. I use this in conjunction with Dr Tim's waste away gels & Eco Balance. I use this product specifically after water changes.

AFter I used this my fishes would only stay on the top surface for a few days.

I used Re-fresh in combination with Waste Away to help fight a pretty nasty cyanobacteria problem. It is all natural, and didn't affect my nitrifying bacteria at all. Actually, it improved my water quality by removing all nitrates and phosphates! While I haven't completely won the battle yet on the cyano, it is 90% better than what it was and continues to get better every week. Love this stuff!