I have a 32gallon Biocube. Been running strong for about 6 months. Recently modified it and removed stock lid and replaced with acrylic lid with holes for ventilation and added the Radion XR15 blue as my light. Have it running on the Soft/LPS setting at 20% and set to acclimate up to 40% intensity over a 30 day period. My question is what is the best auto top off system for this set up ? Never had evaporation issues when it was such a closed system. Now I am constantly topping it off manually, but would like an automated option. What are you guys opinions ?