Cloudy water after cleaning
1. 55 Gallons.
3. Setup for about 5 months.
4. 2 Goldfish, 1 Pleco, and 1 eel type fish.
5. I do have live plants.
6. About 72 degrees.
7. Bio wheel 350.
8. No Co2.
9. I do have natural sunlight.
10. Changed about 20% yesterday.
11. Weekly water changes.
12. Goldfish flakes once a day and sometimes brine worms in the afternoon.
13. 2 flourescent bulbs for about 12 hours a day.
14. I did a water change yesterday, today I woke up and the water looks very cloudy...almost foggy. Water was very clear yesterday after I changed it.
15. I frogot to record the water parameters but they are all normal, pH was a little low.
16. Liquid test kit.
17. I bought a goldfish like a month ago, he stayed in quarentine for about a week and is doing great.
If it's a green fog then it is most likely algea in the water in which cutting the lights down and blocking natural sunlight will help. I'm guessing it is a milky white fog though.
If it is a milky white fog, you have free-swimming heterotrophic bacteria in the tank. If you've ever heard the term "bacteria bloom", this is it. Basically whenever you have a sudden increase of nutrients floating around in the tank, these bacteria come in to feed off the nutrients. THey are not the same as beneficial bacteria but they are relatively harmless. Their bi-product is ammonia though so keep an eye on your params and do small water changes accordingly. As the nutrient levels in your tank decrease, the fogginess will go away so sometimes just waiting it out will solve the problem.
An increase of nutrients in the tank generally comes from 3 different things:
1) brand new water change of a lot of water (some tap waters have very high nutrient levels so in a large tank you are putting a lot of new nutrients in the tank when you do changes). Nutrients in the water are good for the fish but an excess can cause this bloom every now and then.
2) excess feeding: fish food is full of nutrients so if you overfed even just once then you can get a bacteria bloom. Even if this was not the problem in the first place, I would cut down feedings till the problem subsides.
3) a lot of debris kicked up from gravel vacuuming: Some people are messy gravel vacuumers and kick up a lot of waste and excess food when they gravel vac. Now there is a lot more free-floating nutrients so you can get a bacteria bloom from that too.
My suggestion to you would be to keep an eye on the parameters but don't do any huge water changes right now. Everyone's first instinct is to change a lot of the water especially because sometimes a bacteria bloom can smell foul. This only adds nutrients to the water though and prolongs the problem. I know 20% isn't a huge water change but in a 50 gallon tank that is about 10 gallons of new water. Also as mentioned before, cut down on feedings for a little bit to reduce nutrient levels as well. Hope that helps at all...good luck!
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