This super awesome DIY brought to you by Open Source Aquatics.
I've had my aquarium controller up and running for most of last week, but I still haven't set up my ferts because all I had were those 1000mL "dispensing" container. you know, those sciency ones.
I wanted something better.
Head on over to Lowe's or Home Depot and pick yourself up a couple "all purpose" spray bottles.
For the tubing I had to go to Home Depot for some "microfuel line
." I was having some issues finding anything this small, $4 for 10' seems like an ok price, and was more than I needed.
You've got your spray bottle, now what? Take off the stuff you don't need. the pretty white plastic piece on tops slides back.
The trigger pops off easily enough. Pull it forward and up a little, then push the whole piece upwards and it should come off.
You'll be left with this.
This is the hardest part. The clear plastic part is being held in the cap via 6 little tabs that you can't get too. However, you can either tear apart the clear plastic, or get lucky and pop it off... I got lucky with this one, and grabbing at the top where the nozzle line meets the spring, managing to pry the whole thing back and off.
The entire top falls apart now. You can trash it all but the two items being pointed to.
You'll want to cut the tip of your tube at a slight angle so you can pull it through with the needle nose pliers.
Now just pull it to length, and you're good to go. Toss the cap on, and you're done.
And what's really cool about this specific bottle, it has mL measurements right on it, so you can mix your fert solution right here.