Adding White Clouds Again...

TankTech

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So today I added two new White Cloud Minnows to my tank. The last few times I added new fish they did not make it. It is all because I changed to RO water by the advice of the fish store without knowing what I was doing. Now I know I need to add minerals to balance out the water hardness. The last time I added White Clouds (2), they died in 24 hours. I have one that has been in there for several months now. He is a survivor, living in extreme soft water conditions due to the pure RO water I was adding. All his previous other White Cloud tank mates died. Now, finally, I have balanced my water close to what the fish store water is. I slowly added minerals to the tank for hardness control. I believe the last two fish died because of osmotic shock. That is my theory.

Fish Store Water: 8.4 pH, 8 deg KH, 214.8 ppm GH
My Aquarium Water: 7.6 pH, 3 deg KH, 179 ppm GH
Ammonia = 0, Nitrite = 0, Nitrate = 5 ppm

I am hoping that though slightly lower, the fish will adapt without shock to the change in water hardness. I also, slowly, over a period of 6 hours, acclimated the new fish by mixing some of the tank water with the water they came in from the fish store. If all this does not work, I will be at a loss to explain as to why.
 

Mr. Kgnao

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Is there a reason you're still bothering with all the hassle of RO?
 
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TankTech

TankTech

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Yes, I was getting algae in the tank. I do not use tap water, it way too hard where I live. I was mixing bottled water, but that is more expensive than RO. The fish store told me that the algae in my tank was from the bottled water supply. So now I switched to RO. My new fishes are very happy today, I must have got it right for them!
 

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