Crystalpro Calcium Plus - Highly Concentrated Liquid Calcium for Freshwater Snails, Marine and Reef Aquariums - Contains 160.000 ppm Calcium (4.22 Fl Oz)
Water Salinity Refractometer, LEERCHUANG Dual Scales Hydrometer: Specific Gravity 1.000-1.070 & ppt 0-100 (1‰ = 1ppt = 1000 ppm), Handheld Seawater Tester for Aquarium, Marine Fish-Keeping, Pool Tank
XinJiaYi Water Salinity Refractometer, Dual Scales Hydrometer: Specific Gravity 1.000-1.070 & PPT 0-100 (1‰ = 1ppt = 1000 ppm), Handheld Seawater Tester for Aquarium, Marine Fish-Keeping, Pool Tank
sera LED Daylight Sunrise 965 – colourfast and Natural Daylight (6,000-8,000 Kelvin) [Energy Class G]
Lovibond - Dipslide D001 TTC/TTC | Total Viable Count Testing | Aerobic & Anaerobic Detection | Rapid 48 Hour Results | Test Range 100-1,000,000 | Pack of 10 | Alternative to PT711
Pontect PondoRell 3000 - Compact and Efficient Underwater Pond Filter With UV Light and Integrated Water Feature Pump - 1,000 Litres Per Hour - Suitable for Ponds Up to 3,000 Litres without fish