I have a cautionary note:

You are using a clear plastic domestic water filter housing.

My shop has used these for coolant filters for years without problems and I have suggested their use many times here on cnczone. Recently, however, someone did install one and the plastic housing fractured making a bit of a mess with coolant all over the place.

With your setup the housing is under air pressure, not liquid pressure, and when it is almost empty of coolant it is almost full of air at 15 psi; if this housing fractured it could fling plastic shards around.

A metal shroud around it may be a good idea.