The Planted Tank Forum - View Single Post - Should lighting change when adding c02?
View Single Post
post #6 of (permalink) Old 02-16-2017, 01:09 AM
Seattle_Aquarist
Planted Tank Guru
 
Seattle_Aquarist's Avatar
 
Join Date: Jun 2008
Location: Seattle, WA
Posts: 4,199
Quote:
Originally Posted by Jerad Wilson View Post
I will be adding c02 today to my beginner 10 gallon planted tank. Right now I have two 13 watt CFL's. There has been a little algae growth, which is to be expected. How many hours a day should I keep the lights on? Should I increase the amount when adding c02, or get brighter bulbs, such as 26 watts? Thanks.
Hi Jerad Wilson,

Funny, Tom Barr was asked that same question last night at the GSAS meeting here in Seattle. What Tom said it was not necessary to increase light intensity or duration if we add CO2 it's just that the plants will grow faster (and use more nutrients) with CO2. With CO2 the light intensity/duration could be increased but that would increase the use of nutrients even further.

I would suggest first just adding the CO2 and not changing your photoperiod or intensity. Wait a couple of weeks and watch for deficiencies in your new growth. Then once you have everything in balance increase your photoperiod a little bit (maybe 1/2 hour) every couple of weeks watching for algae growth and deficiencies in new growth and adding additional nutrients if deficiencies arise.

Roy
75 Gallon, 2X55W AH Supply CF 8800K, 1XFluval F&P 2.0 48"/59W, 2X Marineland 350 Magnum filters; 45 Gallon Tall, 96Watt AH Supply CF 6700K, 1X Marineland 350 Magnum filter; 30 Gallon Long; Fluval F&P 2.0 36"/46W, Marineland C-220 filter; 20 Gallon, 1X26W AH Supply LED kit, Marineland C-160 filter; all with Press. CO2 and (Calcined) Montmorillonite Clay
Greater Seattle Aquarium Society (GSAS)

Seattle_Aquarist is offline  
 
 
For the best viewing experience please update your browser to Google Chrome