For battery longevity, I would say charge it daily. You may get two days use depending on how you use it but running it down shortens its life.
Relay is better though.
^^^^^^ as David says.
I have my 110 amph leisure battery on a split charge relay, but as we do minimal mileage I usually supplementary charge it every night. If I get lazy, like today, I haven't put it on charge, but will definitely do it tomorrow evening if we get out (bad weather expected).
The first leisure battery was a cheapie and lasted 3 years. This one has been in the van for just over 3 years and still going strong. They recommend you never let your leisure battery drop to below 50% of charge for longevity.
My pump draws about 4.5 amps with a 2LPM flow. My son used his back pack so the second pump ran very slowly filling a 25l plastic container which he uses to refill his backpack. It draws about an amp. We used about 400 litres today. We were out for 5 hours so the pumps ran for about 3.5 hours - about right as I did a conservatory roof clean.
So theoretically we used about 18.5 amps from a fully charged 110 amp battery leaving 91.5 amps. The alternator probably replenished about 4 amps when travelling back home so I believe I am at about 86% full charged. If we do the same again tomorrow, we will be down to about 75% of fully charged, so will put the charger on tomorrow evening.