Dosing Fe with a dosing pump

[LMuhlen]

I've been dosing Fe gluconate with a dosing pump and today it occurred to me that at such low doses, the solution takes several days to travel from the bottle to the tank. I'm using transparent tubing, do you think it is likely to be degrading before it hits the tank? The tubing gets indirectly exposed to the tank light.

 

[simon_the_plant_nerd]

I couldn’t say about the science but anecdotally I dose Fe DTPA in clear tubing too but haven’t experienced any deficiencies. I too would be interested to know the answer on this.

 

[Connswater]

I couldn’t say about the science but anecdotally I dose Fe DTPA in clear tubing too but haven’t experienced any deficiencies. I too would be interested to know the answer on this.

Ah the science, if only I had a PhD in chemistry...I used to throw the odd human Iron tablet into the tank, and bury one against an Amazon sword or two, it seemed to work, iron sulfate, my PhD chemistry friend tells me, 'yes that would work, at least for a while', hard water apparently then becomes an issue. Now I too add iron but with EDTA, all completely I'm afraid beyond me.

 

[Zeus.]

When I was dosing light sensitive liquid ferts, I some black tape and covered the tubing, didnt take that long or you could just get some black tubing.
I also use to make the ferts on the weak side so I dosed a larger volume, so ferts didnt lasts months and it also did a little top up of tank