Aquarium Test Kits

Hanna Instruments Phosphate Checker Review — Tested for Quarantine and Hospital Tanks By Marina Holt — 15 years of reef and freshwater aquarium experience, freelance aquascaper, experienced hobbyist who has killed enough fish over the years to know what actually works — Portland, Oregon The Short Answer The Hanna Instruments Phosphate Checker is a solid…

Nyos Nitrate Test Kit Review — Tested on My 125 Gallon Mixed Reef By Marina Holt — 15 years of reef and freshwater aquarium experience, freelance aquascaper, experienced hobbyist who has killed enough fish over the years to know what actually works — Portland, Oregon The Short Answer The Nyos Nitrate Test Kit is a…

Nyos Nitrate Test Kit Review — For Anyone Sick of Vendor Hype By Marina Holt — 15 years of reef and freshwater aquarium experience, freelance aquascaper, experienced hobbyist who has killed enough fish over the years to know what actually works — Portland, Oregon The Short Answer The Nyos Nitrate Test Kit is a solid…

Nyos Nitrate Test Kit Review — For New Reef Keepers in 2026 By Marina Holt — 15 years of reef and freshwater aquarium experience, freelance aquascaper, experienced hobbyist who has killed enough fish over the years to know what actually works — Portland, Oregon The Short Answer The Nyos Nitrate Test Kit is a solid…

API Master Test Kit Review — For Mixed Reef LPS SPS Systems By Marina Holt — 15 years of reef and freshwater aquarium experience, freelance aquascaper, experienced hobbyist who has killed enough fish over the years to know what actually works — Portland, Oregon The Short Answer The API Master Test Kit is a reliable…

The CoralVue ReefGuard Algae Remover: My 90-Day Saltwater Tank Test By Marina Holt, Senior Marine Aquarist and Reef Tank Specialist The Short Answer The CoralVue ReefGuard Algae Remover is a potent, biologically based treatment that successfully cleared brown beard algae from my 120-gallon mixed reef without harming my LPS corals. During my 90-day testing period,…

API Master Test Kit: The Essential Water Quality Monitor for Your Reef Tank By Marina Holt, Senior Aquarist and Reefkeeper The Short Answer The API Master Test Kit is the gold standard for comprehensive water quality monitoring in the home aquarium. It allows you to test for ammonia, nitrite, nitrate, pH, and salinity all in…