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View Full Version : Green hair algae - be related to RO+DI filter from ebay?

rebecca76
06-15-2005, 01:00 PM
I have had my 29 gal tank since middle of Sept 04. At first I was mixing up salt with RO+DI water from LFS. Did not have any green hair algae. Then after many trips (and spilling water in my car trunk everywhere) to the LFS, I decided to purchase the RD 106 filter from Water General which I bought on ebay. It was much cheaper than a system from a company that deals exclusively with aquariums, and many people said they purchased it and were happy with the decisions they made. I had the system installed in Novemebr and started getting gha in Dec - Jan (I slowly transitioned from the LFS RO+DI water to the new water). Now I have all this gha which I cannot seem to get rid of. Is anyone else having this problem - especially people with this system? I don't know what else could be causing this problem - all I know is that it's driving me nuts. I am also not overfeeding the fish. This is a link to a product similar to the the one I bought for around $100.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=20756&item=3979980612&rd=1
fish-brother
06-15-2005, 02:33 PM
maybe there is something wrong with the membrane, but i dont use ro/di so some one else will probably chime in
cich1
06-15-2005, 02:53 PM
test some water from your ro/di for nitrates and phosphates and tds if possible
rebecca76
06-15-2005, 03:57 PM
what does tds stand for?
gman0526
06-15-2005, 05:22 PM
If I'm not mistaken is Total Dissolved Solids.
2639
08-02-2005, 02:14 PM
Thats what it stands for. I got a TDS meter with my RO/DI unit. I got it off ebay too but from a different vendor. You should make sure that the membrane was pushed in all the way too cause mine wasn't. I caught that during a final check of the system before I turned the water on.

Plus, did you throw away the first 5 gallons or so of the water you got from the unit?
Sugar Magnolia
08-02-2005, 02:53 PM
Rebecca, if you have a local reef club, see if anyone has a TDS meter you can borrow. My local club has one that makes it's rounds to whoever needs to borrow it.

More on TDS - http://www.reefkeeping.com/issues/2004-04/rhf/feature/
Sugar Magnolia
08-02-2005, 02:54 PM
Rebecca, if you have a local reef club, see if anyone has a TDS meter you can borrow. My local club has one that makes it's rounds to whoever needs to borrow it.

More on TDS - http://www.reefkeeping.com/issues/2004-04/rhf/feature/