Ok, but whats the difference between each unit because the pricing goes from $100 to $200. I want to know should i get the one thats $200 or will the lower price one work. I have a 72 gallon and do 10% each week.
A few basics to give you a better handle and what you may get.
A 100 gpd unit usually has less a lower discard rate and a lower percentage filtration rate and may use your DI faster. A 75 gpd unit has a higher discard rate and a higher percentage filtration rate. For your tank, I would suggest the 75 gpd.
As far as the number of filters, even BRS will tell you most systems need only the 4 stage system. The told me, anyway. One sediment filter, one carbon filter, one RO membarne, and one DI. Like this one:
http://www.bulkreefsupply.com/store...tems/75-gpd-ro-di-4-stage-economy-system.html
As to accessories, you don't REALLY need any. BUT, TDS meters and pressure gauges are good for saving money and can actually pay for themselves over time. They will help you determine when it's time to change the filters. Most reccomendations based on time are too drastic, too soon, and IMO are based on dirtier tap water than what we have, and you can usually keep your filters much, much longer. I have 2 in-line TDS meters and a pressure gauge. Wit these in use, my unit has produced hundreds, maybe thousands, of gallons for my 200 gallon system on one set of filters. After 2 years, my water pressure has gone down indicating the need to replace the prefilters, but my TDS says I can still keep my RO membrane and DI.
Having said all that, and with me knowing all that, I went with your original thought, the 75 gpd 5 stage BRS "Plus" system". LOL!!! Have been very happy with it for the last 2 years.
