Making Saltwater

[spider2928]

Is it ok to use reverse osmosis drinking water from the grocery store to do my water changes for my saltwater tank? They say the water goes through activated carbon and then reverse osmosis. My LFS sells RO/DI water for $.69/gallon and pure seawater for $1.29 but I was wondering if i could save money because the grocery store only charges $.25/gallon.

[jbarone]

It's not recommended. RO/DI is the preferred water to use.

[kau_cinta_ku]

without testing the store's water with a TDS meter you really can't tell if the filters in their machine are good. same also goes for the LFS. so without testing the water it is hard to say if it's good or not.

but I have used water from walmart before but also tested it before using it. but in the end I got a good RODI unit for the house

[zma21]

If you have ro/di available to buy, i would do that. But yes, you can use the ro water if you want. I use it and have no problems, but that doesnt mean you won't have any problems.

[wizzbane15]

those machines in the store can be pretty dirty. nothing will beat getting a gallon and testing it out.

[vikusik]

Can anyone recommend a specific brand of RO/DI unit to buy? What do you look for if you're shopping for one? I am planning to buy one but not sure how to choose.

Thanks!

[sprinj76]

<a href=showthread.php?s=&postid=11102921#post11102921 target=_blank>Originally posted</a> by spider2928
Is it ok to use reverse osmosis drinking water from the grocery store to do my water changes for my saltwater tank? They say the water goes through activated carbon and then reverse osmosis. My LFS sells RO/DI water for $.69/gallon and pure seawater for $1.29 but I was wondering if i could save money because the grocery store only charges $.25/gallon.

I use the stuff at my grocery store, have had great luck so far. The RO from the store tests at 6-7 ppm consistantly.

I think if you are going to buy water this would be the route to go, but I would deffinately invest in a TDS meter. Without a TDS meter you have no idea if: the grocery store water, LFS water, or your own RO/DI water is any good.

[95accord]

better than tap water or spring water thats for sure.......

[kau_cinta_ku]

<a href=showthread.php?s=&postid=11103330#post11103330 target=_blank>Originally posted</a> by vikusik
Can anyone recommend a specific brand of RO/DI unit to buy? What do you look for if you're shopping for one? I am planning to buy one but not sure how to choose.

Thanks!

check out purelyh20, filterguys, spectrapure, they all have great units and if you ask them what your looking for and if you have a price range they will help you find a good unit to fit your needs