Top off water

[Diesel84]

I don't have a Ro/di system, and don't really plan on one as I can get my salt water premixed from LFS pretty cheap. Is there a bottled water I can use that is safe for topping off?

[bill302]

What size tank do you have? Its much cheaper to make your own with a $70 ebay ro/di unit.....but what you need to do is get a tds meter I bought mine off ebay for about $12 and buy the cheapest bottled water off the shelf that reads 0 ppm on your tds meter....here is some links to look at. Digital LCD TDS3 Temp ppm TDS Thermometer Meter Tester Filter Pen Stick Water | eBay Portable Mini Reverse Osmosis 50GPD Water System 4STAGE | eBay

[Sniperhank]

I use the distilled water from walmart.

[Daniel Fishy]

If you buy your saltwater from them just buy ro there to. I did that for nine months and final got my own rodi one of the best thing I ever did. Hookup to your hose and your set. Think about it.