I'd appreciate advise on the present circulation. Is it OK as is or would it be worthwhile to replace return jets so that I could improve the present circulation?
Pictures below show the present circulation pattern; both return jets are at shallow end pointing up and across the pool.
At present, there is little circulation of water both at the shallow end (mainly at steps) and at the deep end (very little flow through main drain). These are the areas where algae tends to appear.
I'd like to improve the circulation but the eyeballs in the Jacuzzi jets are frozen likely due to calcium deposits since 1968. Jets replacement would be rather expensive - $2600 ( a quote includes pool draining; drill through the pool shell from the inside to punch 4.5” holes through the wall; acid wash the pool)