Aquasafe's Upgrade Kit serves the purpose of upgrading the old white capped D.I Canisters.
Aquasafe has discontinued the old D.I canisters.
If you’re wondering if you have the discontinued D.I Canisters just check if your canister is NOT see through and if it has white caps. If you cannot see through your D>I Canister and or if your D.I canister has white caps, then you are eventually going to want to upgrade to the new D.I canister system.
The new D.I Canisters are much easier to deal with and the caps come off either side for easy refilling of the D.I Resin. The New D.I canisters are also see through, which makes them very attractive and allows you to see when your beads are changing color which would indicate a time to refresh the D.I resin Canister.