Established 65 tall sudden green water NEED ADVICE

[MrSomethingFishy]

I have had my 65 gallon tank going for 4 months now and all of a sudden (seems like it to me) my water has turned green and I can't seem to get rid of it. I have a normal gravel substrate, marineland bio wheel 400 power filter, some plants(6), 2 moss balls, and a 36" coralife light fixture with 6700k square pin bulbs.I do weekly water changes and gravel vacc. I don't know what is goin on, nothing has been added or taken out. Seems like it keeps coming back the day after the water changes. Some/ANY tips or suggestions are very much appreciated. Thanks

 

[KcMopar]

Do you turn the light off at night? You might try having the light off longer. Is the tank in direct sunlight or close? I have changed my lights to 18000K and have less algae then with the standard freshwater lighting. You may have high nutrients as well. Adjusting to a lesser feeding schedule and a longer off light schedule will help. Do you know where the nitrate and phosphate is at? These are two of the biggest problems in most cases.

 

[Kiara1125]

That happened to my Fry tank. It doesn't seem to bother the fish and I don't mind, although it's not all that pretty to look at. I don't even have a light on that tank and this happened. My tank has been like this for 3-4 months and I've tried to do everything, even Tetra Algae Control, and nothing worked. Now I just leave it, but after a while I'm starting to notice that the water is getting clearer with every water change.

 

[MrSomethingFishy]

Yes, I do shut the lights off at night. When I first noticed the problem I went online and read up on the possibilities. I may have been keeping my lights on too long. I now turn them on at noon and shut them off at 10pm. 10 hours of light. I keep my water clean, and do proper water changes once a week. I know for a fact my nitrAte levels are all good. Don't know about the phosphates tho. Should I be testing for them?? Didn't know I should.

 

[aakaakaak]

It's just water-bourne algae. It's pretty much harmless to fish or plants.

Fix it by turning off the lights and doing 50% water changes until it clears. Not goes white, but clears.

After you have fixed it, go buy a cheap $5-$15 light timer so you don't accidentally go too long on your daily lighting. Many people will split the time between a morning session and afternoon session to increase their "quality time" with their fish/plants. This is perfectly fine for the fish and plants.

 

[KcMopar]

The phosphate test kit is not a real necessity, its just one more piece of info on your tank which in some cases good if you are having a problem.

 

[nanu156]

Hey there. So there is generally enough daylight to forgo lights all together if you are not home. I don't have AC in the room where my tanks are, that being said I haven't been running my lights at all on hot days in efforts to keep the tanks under 80. Unless you are planted with plants that are tricky (in which case you have the wrong fish in that tank because he is going to be a re-decorator for sure) I would suggest that you leave the lights off until you get home from work. This should help.

Also a heavy water change and cooling your jets on the feedings will help.