Hey guys, Not sure if this is the right forum for this, but seemed the best fit to the question. I am in the process of getting a larger tank setup, and think the RO/DI system for initial fill and water changes would be the cheapest option. Currently for my 13 gal I buy pre-packaged ocean water in 5 gal increments, but its 20 bucks per 5 gal and would add up pretty quickly. Now for my question: What are some good systems for the money? I'm willing to spend a little more for quality, but good prices are preferred. The new tanks I'm looking at are between 40-60 gallons. Thanks!