I am amazed your fish lasted that long with your Jack!! I had a Jack for 8 years and he ate every one and everything that moved in the tank. I would have friends feed him by holding food 3-4" over the top of the tank and he would leap out and snag it!! (sometimes with finger tips in there as well) I feed him worms, crickets,fly's and anything else that I caught!! He even ate a bumble bee!!! Good luck with him, I hope he brings you as many years of fun as mine did! As far as the algae goes I just scrub it off and step up the water changes. I find it comes and goes.
well my JD was only like 2 months old when i got him and the bala sharks at pretty much the same time, but now he is getting big and strong....
As far as the algae, I have a planted tank and it grows on the plants so you cant scrape BBA off of plants
