ok Got back from my trip and got everything back to normal parameters and figured Id give an update to this issue with the spyglass.. After conducting a few tests Ive come to determine the problem occurred from Bio pellets clogging at the top of the spyglass.. never head this problem in well over a year using both Avast purchased bio pellets and Vertex Bio Pellets, Not sure why but I switched recently and added about 500ml of Warner Marine EcoBak Pellets a couple weeks ago, weather or not that is the issue I can't say as I only tested the unit with the ecobak and did not repurchase either of the 2 previously used pellets. However it appears the ecoback pellets are not sinking as the other 2 brands did? and after they float and get trapped at the top the back pressure would slowly lift the pressure fitted cap. None the less I made a decision to nix the bio pellets and switch to NoPox for future carbon dosing, I did however decide to put my spyglass back to work with a different medias, a 50/50 mix of Rox and GFO, and over the past 3 days have experienced something I had not experienced in my tank before 0 NO3 and 0 PO4.. they've always been low as Ive always run these medias in a BRS Reactor but never have they completely been stripped from the water to 0. the fluid motion is truly unparalleled by any previous reactor Ive used. So thats my .02 Hope it is helpful to someone somewhere … And I ended up buying the cleaner cap anyhow just not in the way I was initially thinking LOL