skeletonw00t
Member
- Joined
- 16 Dec 2011
- Messages
- 324
Hi,
I have a question about the CO2 concentration in tanks & the light demands that follow it.
Does the CO2 work in the same way that ferts do - in that the CO2 uptake is capped & that upping CO2 will just mean that the CO2 will not be a factor in limiting plant growth.
Or
Does CO2 work like lighting - in that increasing CO2 will increase the plants demand for light & nutrients.
The reason I ask is that i have very high CO2 in my tank & am also dosing EI. I am still getting slow growth though. The reason I suspect is that my lighting is low & my bulbs are too old.
I use 2 x 25watt T8 tubes in a 130 litre tank - the bulbs are around 14 months old.
I was considering upgrading to a T5 Luminare - or maybe just trying replacing the bulbs.
I have a question about the CO2 concentration in tanks & the light demands that follow it.
Does the CO2 work in the same way that ferts do - in that the CO2 uptake is capped & that upping CO2 will just mean that the CO2 will not be a factor in limiting plant growth.
Or
Does CO2 work like lighting - in that increasing CO2 will increase the plants demand for light & nutrients.
The reason I ask is that i have very high CO2 in my tank & am also dosing EI. I am still getting slow growth though. The reason I suspect is that my lighting is low & my bulbs are too old.
I use 2 x 25watt T8 tubes in a 130 litre tank - the bulbs are around 14 months old.
I was considering upgrading to a T5 Luminare - or maybe just trying replacing the bulbs.