[pickleboy]

what you are finding is the principal of the old hot acid tanks that were used for years in the auto machine shop industry. commonly called vats, they contained some kind of acid at around 150-200 degrees, the part was submerged and agitated(shook) back and forth. this would result in a completely clean part in about 4 hours, for say an engine block. then the part was rinsed and was ready for machining and rebuild. due to environmental concerns with the acid and waste product this type of cleaner is now almost extinct. in place of that there are automated washers that will suspend the block and use water based cleaner at high temp. the part is rotated and there are high pressure jets in the enclosure that blast the crud off at hundreds of psi. these new machines are great but very expensive. as for your project if you can devise a way to create a jet nozzle that can spray this heated cleaner under the liquid level of the tank it should help give the agitation that is needed. it would need to be faster than a recirculating filter system. maybe in the 75-100 gallon per minute range. hope this helps and i didnt bore you.