waterchange water has crud in it!

zsqure

Member
I checked my waterchange water and it tested good for trates (less than 12.5), ph was 8.4 salinity was 1.023. The temperature was 83.7 deg. (it's in my garage). There is crud coating the inside of the trashcan. It looks kind of white and pastie (sp?). is this some kind of algae? should I be concerned? should I drain the water and wipe it out? I have been using water from an ro unit at the corner store. I don't trust my ro unit (15 years old), I have used 10 gallons out of it and at that time I decided not to use it anymore. I have been doing 10 gal wwaterchanges weekly, my trates in the tank have gone what looks above 25 and I need to do a 30 gal change or so to get the numbers down. I am using the salt with the clownfish on the bag I think it is instant ocean. I need help I don't want to kill my fishies. Oh I have a 90 gal tank with sump, lr and ls when I do my waterchanges I pull the water from my sump instead of the main tank. Should I not do that? (My bioballs will be exposed) If I pull water from the main tank the lr will be exposed. I have had this container wet in my garage since may1 of this year. I thought I could leave water in the can all the time and just add ro and salt until the correct salinity level was reached.
 

theappe

Member
I think your water change water is bad. It shouldnt have any trates since its "virgin" Your trates might be going up due to the water changes
 

jojo_b

Member
You had the container wet in the garage from May 1? Was it empty and wet? Because if so, you might have picked up some mold/fungus growing in there.
Alternatively, I've had a white scum on my water change bucket before and I think it was due to some calcium precipitation. I wasn't using Instant Ocean as a saltmix, though, I was using Proline. So maybe it could be that?
 

zsqure

Member
what is a precipitate. I believe I need to scrub the container, any suggestions as to what I should use?
 

threed240

Member
Precipatate happens if the Alk or Calciumis too high, Precipatate is when it looks like snow fallng in the water. It covers everything in a white coat.
 

ophiura

Active Member
It is important to check these parameters, because if this water is then used in the tank, and the alk and calcium are waaay off (and this has been known to happen in "bad batches" of salt), you can cause real problems. The precipitate left in the bucket may not be as much of a concern as the water itself, IMO.
 
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