I am struggling with root rot in both my 20 gal re...

Consider the Material & Thickness of the Reservoir Tub – Darker and thicker material will let less light through to the reservoir. Consider Reflectivity – Pale colors tend to reflect back more light and heat, but you can always increase the reflectivity later by covering the lid with a reflective material! Check Thoroughly for Light Leaks! You may need to get down low and look up to see them! Use Opaque Tape to Cover Any Light Leaks – Electrical tape and reflective tape are great options for covering up places where light is getting through. Use Dark (Light-Proof) Tubing – Another way to protect the water from light exposure Light-Proof Your Net Pots. Neoprene net pot inserts are great to fill in the net pot instead of using clay pebbles, and won’t let any light get through. Other great options include net pot covers.