Choose the question first
Buyer guide
Best marine aquarium test kits
Compare assembled Salifert, Red Sea and Hanna routes by parameter coverage, method, running cost and practical fit.
Routine
A reef water testing schedule that scales
A planning template for cycling, new systems and established tanks—built around trends rather than one dramatic result.
Nutrients
Nitrate and phosphate test kits for reef tanks
Choose a useful range and resolution for nutrient control without treating a low reading as a prize to chase.
Foundation
Calcium, alkalinity and magnesium test kits
Understand the three foundation measurements, replacement costs and when digital convenience is worth paying for.
Laboratory
ICP testing for reef aquariums
What a mail-in ICP snapshot can add, what it cannot diagnose and how current UK prices compare.
THE MONITORING RULE
Consistency beats a heroic test kit.
Use the same method, at a similar time and with clean equipment. Record the brand, range, result and date. If a number looks surprising, repeat it before changing several variables at once.