Turtle Posted December 20, 2021 Share Posted December 20, 2021 I put in a dehumidifier in my small fish room. I have a 50gal barrel for the drain off. The top off rate on the tank's is up and I'm very cool with that. The question is did I just make 45gl of R/O water. The test strip showed GH/KH at 0 PH 6.0 Link to comment Share on other sites More sharing options...
lefty o Posted December 20, 2021 Share Posted December 20, 2021 just be mindful, lots of bad things can grow on an evaporation coil. i myself would be hesitant to use it in a fish tank. 4 Link to comment Share on other sites More sharing options...
Turtle Posted December 20, 2021 Author Share Posted December 20, 2021 Hmm? Not sure if I have any aliens growing in my dehumidifier yet it's in a bedroom and new I have to empty the barrel. I did top off 3 tank's with it adding cichlid salt,s to the Tanganikan tank,s and nothing to the South America bio just about one inch to each. Link to comment Share on other sites More sharing options...
OnlyGenusCaps Posted December 20, 2021 Share Posted December 20, 2021 I tried this on some sensitive plants. Killed them. Turns out dehumidifiers are really good at getting aluminum (aluminium for my British friends - I know, I know, it's the correct way 🙄) into the water. I'm not sure why, but when I sent the water off to the testing lab it came back with much higher Al than is safe to drink. I found out others already knew this. 1 Link to comment Share on other sites More sharing options...
Ambienttech Posted December 20, 2021 Share Posted December 20, 2021 On 12/19/2021 at 8:56 PM, OnlyGenusCaps said: I tried this on some sensitive plants. Killed them. Turns out dehumidifiers are really good at getting aluminum (aluminium for my British friends - I know, I know, it's the correct way 🙄) into the water. I'm not sure why, but when I sent the water off to the testing lab it came back with much higher Al than is safe to drink. I found out others already knew this. HVAC guy here. The reason the aluminum content was high is due to the evaporator coil material which the water condensed on. The water is acidic so it tends to leach aluminum and copper from the coil. I wouldn’t use it in my tanks. You could use it to water plants but know that it has no mineral content so I wouldn’t use it alone for the plants. 1 1 Link to comment Share on other sites More sharing options...
Turtle Posted December 20, 2021 Author Share Posted December 20, 2021 Cool I don't need it I just wanted to save it if I could . The little bit I did top off with shouldn't be enough to kill every one. Time will tell now I guess Link to comment Share on other sites More sharing options...
Tami Posted December 20, 2021 Share Posted December 20, 2021 I found my dehumidifier walker was high in Ammonia - I considered using it after finding something online- actually started using it - then found something else online, tested and found high ammonia Link to comment Share on other sites More sharing options...
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