AQUARIUM & POND FILTERS, PUMPS, LIGHTING & OTHER EQUIPMENT PUR vs PAR in Aquarium Lighting PUR stands for Photosynthetically Useable Radiation. It is also known as "useful light energy". This is more important for determining your aquarium light source than PAR. ...
My mom has a 270 gallon reflecting pool in her back yard (with a fountain two filters, one of which is attached to a UV light). There are no plants in the pool. She has kept Orandas for years and is cleans the water regularly. Currently she has four Orandas. She feeds them sinkin...
AQUARIUM & POND FILTERS, PUMPS, LIGHTING & OTHER EQUIPMENT PUR vs PAR in Aquarium Lighting PUR stands for Photosynthetically Useable Radiation. It is also known as "useful light energy". This is more important for determining your aquarium light source than PAR. ...