"dad1uk", leisure batteries are made for deep cycling (that's why they are so bloody dear!), so discharging down to nearly emply will not harm them. Standard car batteries do not like to be treated thus, they are merely there as a "float" source for mdoerate discharge, the main source being the alternator - otherwise all of your journeys would be short ones!
That top-up amount over 6 cells isn't excessive (125ml per cell), so would not affect the recharge time; it's simply because you allowed ot to get completely empty.
Assuming that your pikey charger will output 2 amps, with your 110 A-h battery it will need at least 110/2 = 55 hours to charge fully.
If you are not in a hurry to use the battery, it will help recondition it if you put it through several charge/discharge cycled to sort-of exercise it. A pare headlamp bulb or two would be a good way to discharge it, at about 5 amps per bulb/ One bulp will take 22 hours and two bulbs 11 hours to empty the battery, ready for charging again, and again and.......
Ron.