Running 6 month old kessil a350W LEDs. Two of them.

Lets Annalise what we have here
 

Gust step by step.

You talk about the. Tank,

-what size is it ?
-what sand do we se on the bottom, and how old is it ?
- you tell you try to fix it froth your friend, did you move the tank? And thus moved /stirred the sand

- why where the lights off ?
- during lights off for a month, was everything Ells running ?
- what pumps douse it have and how manny to move the water ?
- ar there fish ? And do you feed anything ? And what and how often do you feed.

-is your live rock new and cured, or existing

For now my 2 cents would as mentioned by others be that some how your phosphate is way up.

It's because green water means lots of food for algae to grow, lots of food means lots of phosphate.

So when the lights where off for a mont, and now on, the tank got a shock, and things did not had. Time to settle when you put them on, and a algae bloom is poising you now.

But it is of most importance to find what is feeding your algae.

Lets not talk about bad hardware or good, lets first put everything o the table, so we can se what is all inf.uancing the operation of your tank

It could e gust a little thing, that you gust did not know, or something little you have to change.

Hi here are my params.
Ammonia 0.00 ppm
Nitrate 0-2.5 ppm
Nitrite - 0.00 ppm
Magnesium 1300 mg/L
Alkalinity 11 dkh
pH 8.2
Calcium 400-410 mg/L
Salinity 1.024
Phosphate 0.0 ppm
Temp 78 F

What test kit are you using for phosphate?

right you are...

I wonder if maybe your clams spawned? You may have to aggressively run more carbon to help clear it up.

+ 1 at east you try to get the food forthe algae out of the water. But I'm a bit baffled by 0.00 phosphate.

Sometimes rock can leach phosphate into a tank, not enough to measure, but enough to course algae growth, but than at least I experienced a hear algae, not a algae water

How long are your lights on for, how many hours a day.

Ya, I felt like that when I first started this hobby. The folks here really know their stuff. One of the most important things I learned here is to be patient. If your a PHD (poor hungry desperate) student, I would get a wish list for Christmas and Birthday's. You will want to ask for light bulbs, media material, such as phosphate remover and charcoal, salt buckets, and fish that help your situation, for example sand sifting golbies, or crabs and snails. Oh one more thing shop on boxing days and always look on this web-site for good deals. Good luck and happy holidays.:wink:

what brand of carbon are you running? if i were me i just run lots of carbon for now until water clear up. Then start gfo again. Also make sure you power head does not pointing at the sand