I'm getting ready to order a dosing pump. I'll be dosing kalk through my Apex Jr. Anyone know the difference in these two? Any other recommendations? I have a $100 budget.
http://www.bulkreefsupply.com/brs-drew-s-doser-peristaltic-dosing-pump.html
http://www.bulkreefsupply.com/brs-2-part-doser-1-1-ml-per-minute.html
http://www.bulkreefsupply.com/brs-drew-s-doser-peristaltic-dosing-pump.html
http://www.bulkreefsupply.com/brs-2-part-doser-1-1-ml-per-minute.html