Well water making my planted tank and algae tank?

I have a 55 gal planted tank and have a slight problem. My planted tank has now become an algae tank :/ i am over feeding slightly, around two medium to large feeding a day (two pinches ofsmall cichlid pellets) so i will cut back to one medium feeding every other day. But my other question was this, i am usinv well water and dosing with Flourish. With 150 watt MH. It is fairly planted, around 16 total plants. No filter media and relatively low flow. Could my well water have Nitrates? Or is there just too much elements. 15 galloN WC bi weekly.

Ammonia: 0
Nitrite: 0
Ph: 8.0
Nitrate: 100 ( could the well water cause this?)

I know the nittates are the issue, i just am not sure where theyre coming from.

 

Is that test from the tank or the tap?If from tank do a test from you tap

 

Definitely test your NO3 and PO4. If they are out of balance you will have an algae farm.

You want a 10:1 ratio of NO3 to PO4 to keep algae in check. Make sure you have plenty of K, Fe and micro nutrients plus Ca and Mg to give the plants all of the building blocks they need. CO2 must be available in sufficient levels if you have medium to strong light over your tank.

What plants do you have in the tank and how long are your lights on?

 

My guess would be there are natural phosphates in the water. One of the local wells in our community has a fair amount of natural phosphates so we dont have to add that to the water (I work in the water treatment and distribution field), but plants and algae feed on the phosphates especially when they get enough light.

 

Anacharis
Java fern
Amazon sword
Bamboo
Philodendron ( just roots in the water, looks very nice)
Lilly pad
An odd plant that grows around a friends lake ( not sure on Sp. but its roots are in water, tops out, just like bamboo)
Onion bulb
And a plant i hav forgotten the name of. I got it as a bulb

Lights are on 630- 930. Should i got 2:30 to 9:30?

 

That test was from the tank. Ill test the tap soon, i cant find my test so ive been ising my grandmothers

 

It's the Flourish that's causing the inaccurate nitrating reading. I had this same experience.

 

Run your light no longer than 10 hours a day, that should help cut back on the algae growth. Right now 8 hours may be better until your plants mass is sufficiently high.

Do you have hair algae, spot algae or dust algae?

 

Hair algae. My anubias have some spot algae also.

 

Hair algae is a sign of too much light and not enough nutrients and an imbalance of those nutrients. Manually remove all of the hair algae you can and cut back your light period to 8 hours. Dose as I have suggested and make sure you have plenty of carbon for the plants also. If you are using excel boost it to 3X the recommended amount slowly over the next week or two.