@MotaZona i think you guys are right ill start using tap water and let it sit,but whats the best water to use ?? I guess rain water ? next is? RO?If it's just Chlorine that's in the water you can fill a bucket and let it sit for 24hours, preferably with an air pump. But as you're on a low budget, just letting the water sit will remove most of the chlorine in 24 hours. Most water municipals have a chart with the average values of their tapwater on their website. That's also handy to have...
Like @MotaZona said, there's usually lot's of minerals in mineral water, so maybe tapwater that's aired is better then the bottled water...who knows?
I have a humidifier, is this distilled water ? Is it better than tap water ?