jsr Posted February 4, 2008 Share Posted February 4, 2008 In addition to my SW tank, I have a 29g FW upstairs. I came home today and noticed the water was cloudy. I also noticed a dead fish (hence the cloudy water) so I decided to change half the water. When I was moving some of the rocks, I noticed the crawdad had died as well. I have no idea what caused the two fish to die. There are no other fish in the tank. So now, I am going to take everything out and clean it really good. My question is this; do those who have FW tanks use RO/DI for the water? I assume this is okay, but want to make sure. Oh yeah, the tank has been running for about 2 months without any problems. Quote Link to comment Share on other sites More sharing options...
chatfouz Posted February 5, 2008 Share Posted February 5, 2008 clean water is clean water. rodi will not hurt the tank. but its kinda scary that the crawfish died. they are dirty water creaturees, they are the ones that normally live in rivers and whatnot when other stuff cant survive!! good luck with your tank. Quote Link to comment Share on other sites More sharing options...
stoneroller Posted February 5, 2008 Share Posted February 5, 2008 I would not solely use RO/DI water in a freshwater tank without adding back minerals, etc. There's a product called RO Right to do this for you. Kent Marine makes it. I have always used tap water with dechlor for my FW tanks. Quote Link to comment Share on other sites More sharing options...
Beretta Posted February 5, 2008 Share Posted February 5, 2008 (edited) I've always just used tap with dechlor on my freshwater tanks. The only time I've used RO/DI water was when I needed to lower my ph. My guess is when the crawdad died, it caused an ammonia spike that killed the other fish. Also, your tank, even for a freshwater tank, is relatively new. Do some water changes, maybe run some carbon, and give it some time. Edited February 5, 2008 by Beretta Quote Link to comment Share on other sites More sharing options...
Jynxgirl Posted February 10, 2008 Share Posted February 10, 2008 I agree on the ammonia spike. How long do crawdads live? This thread brought up memories of when I was little and my brothers and I used to go 'fishing' for crawdads.. down at the 'river' ... (Picture three kids in the sewers in KS chasing after crawdads) LOL I had fw for years and didnt use r/o. Never had a problem. Quote Link to comment Share on other sites More sharing options...
jsr Posted February 10, 2008 Author Share Posted February 10, 2008 I "rescued" the crawdad from a friend who moved to China. I think the crawdad was a little over a year old when he died. Poor little guy was in a three gallon tank before moving into the 29G. Quote Link to comment Share on other sites More sharing options...
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