I saw a good deal online on one and it had different models . I am asking what does the numbers mean for example one had 25gph and the others had 50 gph ect.
thanks,
John
thanks,
John
A question about reverse osmosis units?
- Thread starter jpcampbell123
- Start date
thats how many gallons of premeate (whate comes out of the RO) are made in a given amount of time 25 gph is pretty large 600 GPD = gallons per day.
most RO units are rated for per day rates as they are slow. Also you don't want to use this to filter your tank. They make supper pure water which is good for drinking or mixing salt with for a saltwater tank.
Most likely that is gallons per day not hour. If you mean big enough to do water changes then yes although 75 gpd may serve you better. R/O filters aren't ment for filtering tank water. personaly I have 75gpd RO filter to keep up with water changes for my 450 gal tank and two 55s. Sometime I wish I had more per day. I use a booster pump to makup for low water presure from my well. Also you will have to add the needed minerals back in to the water. I use R/O Right as an additive to my RO water.
That all depends on your w/c's and stock in the tank. I have 2 - 100gpd ro's they don't come close to putting out 100 gpd. To get the advertised flow you need about 70-80 psi water pressure or a pump to boost the line pressure of the ro unit. you should be able to find a 100 gpd ro for around $100-130 with the first set of pre filters and ro membrane
Water comes through the permeable membrane of a reverse osmosis unit VERY slowly. If you have a 100 gallon per day RO filter it will take at least 24 hours to refill your tank with purified water after you remove 100 gallons for a water change!
This is why all RO units have some sort of pressure tank to hold a reserve of filtered water so it is available when you need it. If you had a 25 gallon per day RO filter and a 100 gallon pressure tank it would take somewhere in the area of 4 days to fill the pressure tank. Once the tank is full you can (re)fill your aquarium as quickly as the plumbing between the pressure tank and your aquarium will allow.
If your RO comes with only a 5 gallon pressure tank then you really only have 5 gallons of purified water available at any time regardless of the gallon per day rating of the filter. The higher the capacity of your RO unit the quicker your pressure tank will refill.
A continuous water change system is a great match for the limited capacity of a RO filter.
This is why all RO units have some sort of pressure tank to hold a reserve of filtered water so it is available when you need it. If you had a 25 gallon per day RO filter and a 100 gallon pressure tank it would take somewhere in the area of 4 days to fill the pressure tank. Once the tank is full you can (re)fill your aquarium as quickly as the plumbing between the pressure tank and your aquarium will allow.
If your RO comes with only a 5 gallon pressure tank then you really only have 5 gallons of purified water available at any time regardless of the gallon per day rating of the filter. The higher the capacity of your RO unit the quicker your pressure tank will refill.
A continuous water change system is a great match for the limited capacity of a RO filter.
You should NEVER drink RO water unless you want all your minerals in your body leaching out!!!
http://waterfilters.mercola.com/drinking-water-filter.aspx/
I would put a little more faith in the harmful effects of drinking RO water if that website wasn't trying to sell me "THEIR" water filtration system! The couple minutes of video I watched wreaked of junk science scare tactics!