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If he just got chopped up a bit, give em some time to recuperate. If his foot is solid then it'll be ok. If its slimy and falling apart, then he's a goner
what about GHL? Its pricey but i have heard nothing but good things from this brand....http://www.aquacave.com/dosing-pumps/ghl-profilux-aquarium-dosing-pumps/ghl-profilux-doser-2-4-pumps-with-wi-fi-controller-black.html
If you add an union connector to that valve it could work
or you can add this Mur-Lok® 1/4 Inch EZ Faucet Adapter - Marine Depot from the line, add a ball valve (to close when not in usage if you want) and run it from there or this one...
Gotcha, actually I don't dose myself so I can't say which would be a good option. The apex dose is nice but it's really expensive when you also add in the apex unit to the mix.