I have 2 Drew's dosing pumps that have been rock solid for the two years they have been on my tank. I bought them new from BRS about two years ago. The tubing has been changed on each dosing pump recently. I'll be upgrading to different dosing pumps, so no longer need the Drew's pumps. Both pumps are in perfect condition. Asking $50 for each pump or $90 for both. Please PM for further information. Thanks.