Reverse Osmosis or not? Tap water quality

[zzzzzxx]

Seems like whenever I add water to my tank I get a egg / sulfur smell coming from my tank - If I use spring water from the store I don't get any smell from the tank... Spring water is adding up in price so I was wondering about reverse osmosis to top off my tank? I was looking at a Whirlpool osmosis kit for home drinking water, but would this suffice for my aquarium? Is there a difference between a home drinking water osmosis kit as opposed to an aquarium kit? I was also looking at the AP tap water filter kit to do my top offs, but it looks like an RO unit would be more powerful...thought?

 

[riseabovethesun]

When I ask questions about the RO water it seems to be a controversial topic (mostly on other forums, not here). Some say to do an RO/tap mixture, some say to use a buffer if you use RO and some say to not use RO water because it takes all the nutrients out of the water.

So, from personal experience, I use RO water solely, no buffer, no tap, nothing. My plants grow green, bloom, all fish are alive, and many of my invertebrate reproduce. This is why I don't change the water, because I tried an RO/tap mixture and things started dying and my nitrite went to 0.1ppm instead of 0ppm. And all I do is go to the grocery store and pay the $2.75 per 5 gallons (getting however much I need) during a water change. So using that, which is regular home drinking water works for me, I know my local fish store uses an RO/DI set up -- they handle a lot of saltwater and most saltwater hobbyists use strictly RO for its pureness. I'm pretty sure it is the same set up -- either way the grocery store RO works for me.

Also you do water changes, correct? (and don't just top off the tank whenever it is low?)