[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[APD] The little tank that could!
Thank you Hieber/Broadbridge/Barr for responding to my post. The plants
referred to in the "Bad air and light?" post aren't doing as well as they used to
do. It's good to start eliminating possible causes to get to the bottom of
the problem. I've traded out the 25 watt bulb for a 40 watt at 10 hours a day.
I was using an incandescent to flourescent conversion factor of 4.62 instead
of the 7 recommended by Hieber. The intensified lighting should allow Barr's
recommendations to work. I'm confident they will work. I've seen pictures of
some of his tanks. They are very impressive.
The formula I'm using for light is one that I found in the archives:
1. Multiply surface area by distance from light source to substrate in
2. Multiply product by 0.08 for low light, 0.12 for moderate light, 0.18 for
moderate to high or 0.27 for high light.
3. Then you divide by the number of hours the tank is to be illuminated.
This gives you the total amount of watts you will need for that time to grow
your plants. If you don't have right wattage you can increase or decrease the
You're supposed to adjust intensity of the light by varying the distance of
the light from the substrate or by changing the wattage or both.
At this point I have 20 pounds of CO2 which is more CO2 than the 2 gallons of
water in the tank. So, I'm pretty committed to the CO2 route. I'm going to
push light, CO2, N, P, K and trace elements as much as practicle. If the tank
gets out of hand I'll get a bigger tank. Success in such a small tank would
be a validation of the methods. Having to change 1/2 gallon of water every
three days is fun. It takes five minutes including the dosing regimen. It's
the weekly water tests that are no fun. Someday I hope to be good enough at
this to not have to do so much testing. I even test the test kits with other
test kits! I use standard solutions and ask for second opinions on the readings.
The plants themselves are the ultimate test though.
Sincerely, George Mangen
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com