Hey I was wondering what is a good RO/DI system for a 55 gallon tank? I want to do water changes of 15 gallons every 2 weeks and I want it to do about 15 gallons in like 6 hours. Any ideas or recommendations on a good system you have used or any expirence with? I guess a faster one could also be better because I am planning on upgrading to a 110 to 200 soon. Price should be reasonable also.