wwh2694

Im trying to automate my fertz using one of these peristaltic pumps at ebay. They cost 49 bucks plus shipping. The one I cant decide if i will get 1.2ml/min or 20ml/min. Have anyone use this pumps before? Which one would you pick? Heres a link of the ebay item.

http://cgi.ebay.com/Bare-Bones-Peris...3A1%7C294%3A50

Zapins

I would choose 1.2 mL/min. This means you can make a 250 mL solution and dose about 5 mL or so of it to the tank. You should have a few weeks worth of liquid there. Just make sure you buy the digital timers since they allow you to program in irregular times like 3 times a week vs. every night at the same time.

20 mL is too much.

You will want to insert the tubes into the filter line (in or out it doesn't matter). This will ensure the fertilizers get spread across the tank evenly, and it will be visually more appealing since you won't have tubes coming up the side of the tank.