when i first got my tank the water was crystal clear and i noticed that my ph was low so i decided to add proper ph 7... i think this was the biggest mistake ...
Yes. The ph adjusting chemicals contain things that algae feed on. It is always preferable to bring your ph to what you want it via natural means... i.e. putting rocks in that will raise your ph if it's low or adding peat to lower a high ph. The best thing, of course, is to suit the type of tank you have to the type of water you have. Pick fish that like the water you're stuck with.
i did many water changes and the green water would get better but then itl come back again.
i tried turning of my lights for a week or so and the green water didnt get worse but rite when i put it back on, it came back.
It will continue to do so until you fix the root of the problem. Right now you are only treating the symptoms.
i talked to the people at the LFS and they told me to put green X in my filter. that didnt work. then i bought accu clear( some liquid stuff) and put it in. to my surprise the water became crystal clear but once again came back in a week.
Don't ever put a chemical in the water as anything other than a last resort. Once again, you are treating the symptom, not the problem.
The way I get rid of algae when it happens (as it invariably does in my sunny home... I need drapes, doggone it...) is this: I turn the lights out on the tank, give the fish a normal feeding, and then cover the tank with a blanket. Then I forget about it for a week or so. I don't feed them, I don't "peek in" to see how they're doing, and I don't turn the lights on. I just leave it. After a week, I uncover the tank and do a large water change (about 50%), feed my fish, then lather, rinse repeat... I do this for about 2 to 3 weeks, and the tank will be clear for months and months. It works until I decide to open my windows up to air the house out or I forget and leave the lights on overnight after entertaining guests....
On my non-planted tanks, I don't ever turn the lights on unless I am in the room and looking in the tank, because there is no need to. The fish get enough ambient light from the outside to let them know what time of day it is. My planted tanks, I go easy on the light, not even giving them the 12-hour blast that most new fishkeepers do with a non-planted setup. I turn the lights on for 4 or 5 hours, and that's all. And the hardest thing in the world: only feed your fish every other day. That ensures that you are not overfeeding. Just feed them what you normally feed them on a daily basis every other day, or at least give them a fast day or two a week, and your water will be much happier.
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