Can I premix fert and CO2?

macleod92

Member
Joined
1 Mar 2020
Messages
36
Location
London
Hi all - just wondering if there would be anything wrong with me premixing Tropica Specialised Nutrition with Seachem Flourish Excel?

My tank is in a fireplace without much space so I can’t really fit a big multi input auto dosing system.
I was going to go for a D&D P1 which is compact enough to fit but only has one input.

Therefore I was wondering if there would be anything wrong with premixing my ferts and liquid CO2 in the correct ratio in one bottle.
Obviously these normally go in a tank together so I’m assuming it’ll be fine. But I just wanted to double check I wouldn’t have any issues with them being together in one bottle for an extended time.

Thanks for the help!
 

ian_m

Global Moderator
Staff member
Joined
25 Jan 2012
Messages
5,204
Location
Eastleigh
I have often contemplated this, I even contacted Union Carbide (who make Gluteraldehyde, similar to Excel) and they replied that they didn't really know, but stated that gluteraldehyde does react with "other chemicals" ie algae and carbon source bits in plants, so would not recommend mixing it with other chemicals. I also asked if there was a simple way to measure gluteraldehyde levels, so I could mix ferts and gluteraldehyde, measure levels, leave a week and measure levels to see that none has reacted away, but they stated would require a proper analytical lab to do the measurement.

Could you not locate your 2nd dosing pump hidden a lot further away from the tank ?
 

Similar threads

Top