OK, you've got more than enough light and CO2 for photosynthesis, so if
you're plants aren't growing, I assume that either they're nutrient
deficient or the water's too cold. You've got nitrate and phosphate, so you
need to supplement with trace elements. Make sure your thermostat is set at
72º or better.

Doug Sheely wrote in message
...
My tank has been set up for about two years but I just added the plants
and
new lighting within the last couple of months. I am not adding any
fertilizers and I do have a UV sterilizer running after having a serious
green water outbreak approximately 2 weeks ago.Plants include Amazon
Swords,
Camboa, Ludwiga,Micro Swords and others.
"kush" wrote in message
...
At pH 6.9 and kH 15, by formula, your CO2 is right at the level where it
may
start being harmful to your fish.

What kind of plants do you have, how long has the tank been up, are you
adding fertilizer, and what is the water temperature? Do you have algae
and, if so, what kind?

kush

Doug Sheely wrote in message
...
These are my current test measurements of my 55g planted community
tank.
Any
suggestions?

PH 6.9
KH 15
Nitrite 0
Amonia 0
Phosphate 1.0
Nitrate 20

Plant growth is minimal and no fish distress that I can see. I am
fairly
sure that my Co2 level is a little high. Co2 is injected at
aproximnately
a
bubble a second. small gravel substrate. Magnum cannister filter. 2 -
55
watt pc lights. Thanks in advance for your suggestions to improve
plant
growth and overall health.