Green water
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- Thread starter Chewy42079
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but your making your own rodi water, correct?
Tuffyyyyy
2500 Club Member
How far are you from a fish store? If I were you I would A: take a sample to one of them and have them test your water for you and B: purchase pre-mixed water from the LFS. Do you have anywhere you can put your fish? I don't know if I'd feel comfortable leaving my fish in that tank.
yea have to agree.
i would definatly look to see what the tds is and that the unit is hooked up correctly.
total dissove solids a measure of purity in the water.
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You're not alone, Chewy42079 ... I'm dealing with the same sort of phytoplankton bloom in my 220. (Thread can be found here: https://www.reef2reef.com/threads/what-to-do-besides-sound-the-fog-horns.313109/ )
It's been going almost two weeks, and just seems to be getting greener.
Two days of lights-out did little or nothing.
Swapping out the carbon / GFO yesterday has had no visible effect so far.
I've heard folks recommend UV sterilizers, but would like a more natural cure.
I'd also like to be able to replace corals that fall - can't do it now, because I can't see where they came from.
~Bruce
It's been going almost two weeks, and just seems to be getting greener.
Two days of lights-out did little or nothing.
Swapping out the carbon / GFO yesterday has had no visible effect so far.
I've heard folks recommend UV sterilizers, but would like a more natural cure.
I'd also like to be able to replace corals that fall - can't do it now, because I can't see where they came from.
~Bruce
Hans-Werner
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I had to deal with phytoplankton blooms several times and I know nothing better than UV. Many years ago I tried to kill a dinoflagellate bloom (brown water) with lights out. After showing no signs of decline after 1/2 year just with room light I finally eradicated it with UV. I had green water from Nanochloropsis recently and I guess there is no natural cure. Also nutrients don´t have to be high to inititate such a bloom. I think the cause are instable conditions, I only had these problems with freshly setup or young tanks. Water changes don´t help. They do not stabilize conditions rather the opposite, they introduce fresh nutrients and the unicellular algae divide so fast you have the same bloom or worse in just a few days. You also can never get all the phytoplankton out except by emptying and sterilizing the complete tank and if you have bad luck and you use some tool or introduce one coral of the old tank you reintroduce the phytoplankton and initate the next bloom.
I had copepod blooms while clearing a dinoflagellate bloom. Logic would say next time just wait until the copepods have eaten up all the phytoplankton but this never happened yet. They only ate up blooms in the process of clearing maybe eating dead cells or other organisms that degrade the dead cells like thraustochytrids.
In my opinion only UV will help.
I had copepod blooms while clearing a dinoflagellate bloom. Logic would say next time just wait until the copepods have eaten up all the phytoplankton but this never happened yet. They only ate up blooms in the process of clearing maybe eating dead cells or other organisms that degrade the dead cells like thraustochytrids.
In my opinion only UV will help.
Last edited:
Reeferguy365
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A UV light will definitely do wonders just make sure that UV light is high enough wattage for your tank any use low flow through the light I had a gnarly green water problem in my 180 gallon tank you couldn't see any of my rock and I change my lights from T5 to LEDs cut back on my light was doing 90 gallon water changes every couple days nothing worked for weeks then I ordered a 55 watt UV and a good DC pump within 2 days water was clear and never came back best purchase I've ever made I just wish I had installed that before I had my fish and corals lost a Walt Disney acropora and 4 fish
