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Discussion Starter · #1 · (Edited)
Hello. Here is some pics of my problem. What is it and how I can fix it.
40gal Long. Light 1x6700K 32W,1x8000K 32W fluorescent on 4h, off 4h, on 4h
Temperature 77F,Eheim 2217, UV sterilizer – on for 10h night time.
Ferts-PPS Pro every day before light comes on.
I use to have air stone ON for 9h night time but there was high PH fluctuation and I stop it 3 days ago.
PH -6,5-6,8 , KH 6 , gKH 7 , Nitrite 0 , Ammonia 0 , Nitrate 20ppm , Phosphate 2pm , Iron 0.13-0.18ppm
Pressure CO2 1h before lights comes on 2bps - 25-35ppm
Why there is no pearling over the plants?
Do I have to put more light with shorter photo period or there is some other problem?
Please help me to have good looking healthy plants.
 

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Your co2 ppm is great your lighting is around 1.6watt witch is low lighting what you should do is leave the lights on for 7-9hours don't turn them off then back on 4 hours later. It also depends on your plants if they are fast growing they will pearl more near the top of your tank. My tank is 55gal with 130watt after 5-6hours I will start seeing pearling on some of my plants but not all.
 

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Discussion Starter · #3 ·
Thanks for the info. I don’t know how to calculate the W per Gal. The aquarium is 40gal but there is no more than 30-33 gal of water because of the gravel, rocks and 3D background. If the water only counts I have 2WPG.
 

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You have low light, possibly too low for any plants other than low light plants. The light fixture keeps the bulbs about 5-6 inches above the tank, which reduces the intensity by almost 50% of what it would be with the bulbs right at the top of the tank. The easiest thing to try now is to lower the fixture as much as you can. Then get a drop checker so you can tell how much CO2 you have in the tank water. Your 25-35 ppm is just a guess, since the KH/pH/ppmCO2 table doesn't work for planted tanks. My guess is that you have nearer to 5 ppm than 25. You don't need CO2 for the amount of light you have, but having it would let you grow more plants and grow them faster, which would help to control the algae problems you have.
 
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