A reservoir heater keeps your nutrient solution at a stable temperature, which matters most in cold rooms, garages and winter grows. This collection includes Dutch Masters reservoir heaters of 100, 200, 300 and 500W and the Aquaking Tank Heater HE-500W for tanks of 300 to 500 litres. As a rule, choose more wattage for larger volumes and colder surroundings. Place the heater fully submerged and away from the tank wall, and use a thermometer to check the actual temperature. Find tanks in flexible water tanks and pumps to keep the water moving in submersible pumps.
Questions & answers about Reservoir Heaters
All growing questions →- Water, pH & EC How often should I change the water in my reservoir? In recirculating hydro, every 1 to 2 weeks. In soil or coco you mix fresh feed for each watering, so there is nothing to change. Read the answer →
- Water, pH & EC What is the ideal water temperature for my plants? Roughly 18 to 22 °C. Colder water slows the roots, warmer water above about 24 °C makes root rot much more likely. Read the answer →
- Medium & pots How often should I water in soil and in coco? Soil: water when the pot feels light and the top 2–3 cm are dry. Coco: water small amounts often, daily or every second day in bigger pla... Read the answer →
- Water, pH & EC Can I use tap water, or do I need reverse osmosis water? Tap water is fine if it's moderately hard (EC below roughly 0.8). RO water is a blank slate for exact control, but you must add Cal-Mag. Read the answer →
