Water temperature is one of the most rapidly changing water quality parameters, so it deserves constant monitoring from a dedicated probe system. Each tank should have its own probe and separate reading, as an outlying tank may drop in temperature faster than one located in a more sheltered position. Both rising and falling temperatures are hard on fish, plants, and even the bacteria in the system. Insulating the tanks and troughs is the first step in preventing this swings. Insulation is applied to the outside of tanks and installed underneath liners in troughs, trenches and ponds. Rigid foam insulation tends to be the best option for ponds and troughs. Round above-ground fish-rearing tanks have many more options for insulation, but the best is usually spray foam insulation. This foam isn’t fish safe, so only apply it to the outside of the tanks. Be certain to give it a full curing period before adding water, and fish, to prevent gassing from affecting the water quality. Fiberglass batting can also be wrapped around the tanks for a low-cost solution, but it requires sealing around the edges to prevent loose fibers. It also loses effectiveness fairly rapidly as it gets wet and fails to dry out fully.

Greenhouses are the best buffer for maintaining constant water temperatures. With proper ventilation and automatic lifting sides, the greenhouse will release excess heat during summer days, but keep it trapped inside at night and over the winter. Even if you plan to cool the water because of a tropical climate, a greenhouse still offers an enclosed space to make cooling effects more efficient. A quality green house cover will ensure effectiveness, so be sure to select your cover carefully. BTL liners offers an industry leading cover; ArmorClear. This cover allows 87% light transmission for optimum growth, is durable and able to withstand tough weather conditions, is fabricated with anti-condensate technology to allow optimal natural light and promotes healthy plants and accelerated growth. For more detailed information on BTL liners industry leading covers, visit BTLliners.com