I dont have the $ right now to buy a sump, refugium, all the plumbing that goes along with it, pumps, etc.
You can make a sump out of a 29 gallon glass tank (currently $29 at Petco).
You don't need to buy any pumps. Use the canister filters as the return pump(s). No return plumbing required since you're using your existing hoses/nozzles.
You will have to buy a hang-on-the-back overflow box since your tank probably isn't drilled, but that's it for now. The overflow drain tube can feed into a filter sock, suspended in the sump by some PVC pipe. Swap out the filter socks every 2-3 days and wash them with a hose and/or washing machine with a cup of bleach. Sun dry for a day or two.
All of this should cost around $100... not too bad I think. Eliminating the detritus traps in your canisters should partially remedy the problem. You can further fix the problem by getting a good in-sump skimmer, like the Reef Octopus NWB150, which should be good for your 65g tank and will fit nicely in a 29 gallon sump. Combined with vinegar/vodka dosing, you should be able to get your nitrates and phosphates down to near-zero amounts (carbon dosing requires a good skimmer to be effective, but is very easy to do).