ro unit costing me

[MarkoD]

on my old tank i ran tap water with prime and i had to clean the glass with the magnet every single day.

now running RO/DI i find that i need to only do it every 3 days or so. and i run way more light on my new tank too.

i wouldnt run tap water in a marine aquarium again. it wont hurt anything, you'll just more algae