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Sweet! Im debating on the 30L or the Lagoon 25



I've never heard that recommendation about hot water before. My concern would be damage to the RO membrane and metal/sediment build up in your hot water heater. My advice would be to heat the water with an aquarium heater before mixing. Only run cold water through RODI unit.
Thanks Griff, I'll switch the plug to the cold water outlet...
Not a problem. I typically match my mix my salt water at the same temp as the tank. I use a power head at the bottom of the brute can and one at the top to oxygenate the water.


Pretty basic setup, but should do the work...
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This would be my very first aquarium using salt-mix, my previous tank had a more advanced RO/DI connected to a 100 Gal reservoir but was mainly for auto top-off... Since mixed salts recommend the use of hot water, I connected this system to the hot water outlet... Does anyone know if this could be detrimental to the filters?
Thanks...
I think you have an RO unit, it looks like its missing the DI part. Run it with the cold water, cool build. Are you going to go with live sand?

