phyto not growing

[jody]

hey lately my phyto has been maxing out it's color at a light green , and no darker, i havent changed any of my methods,, befor i was getting it so dark i could barly see through it now it's just light green and not what i was lookign for, mayeb my fertilizers expired?

[daveatwinterpegca]

Just a few suggestions, perhaps try changing out the bottles? New water mixture? one more drop of fertilizer? Let the cycle go for a couple more days before harvest?

I too have experienced this, yet alll seems to be well (or I have just gotten used to it and think its alright now! :icon_surp

[sphelps]

The phyto is using up all it's available CO2 and then it runs out and can't use the remaining amount of fertilizer. You have to add CO2 to the culture if you want denser stuff. It's likely your place had a fair amount of CO2 when you started your culturing, but now it's a low for whatever reason. The fact is the air in a home will always have varying CO2 levels so with just straight air injection you will have varying phyto culture results.

[jody]

makes allot of sense!
how do i make co2:P