Sensors

[dave the builder]

Man alive, that all sounds complicated and expensive.. and L already wants to get rid of them to replace it with a hot tub, if I have to spend any more money on it she'll probably just let the cats eat the fish

We already have a big filter with a UV lamp in it, but that seems to do the square root of sod all.. we can try feeding them less - no idea how much of the pellet crap they're actually meant to eat, mind

just put in what they will eat straight away within 5  minutes 

the UVc lamp (bulb) requires replacement once a year and cleaning on a regular basis to work
that's if it is big enough to cope with the size of pond

be warned, hot tubs require constant monitoring of ph, chlorine, alkalinity, TDS levels etc etc 
what about astro turf ?
or a nice slabbed patio 

[Kevin Wood]

Not sure I'd want to be in a hot tub in which someone has "dissolved solids".

[dave the builder]

Not sure I'd want to be in a hot tub in which someone has "dissolved solids".

Think bath water,  skin, hair, cheese etc 

plus hot tubs require heating and pumped water ,new filter cartridges etc
expensive unless used all the time
cheaper to have a dunk in the village pond 

[Kevin Wood]

Not sure I'd want to be in a hot tub in which someone has "dissolved solids".

Think bath water,  skin, hair, cheese etc 

plus hot tubs require heating and pumped water ,new filter cartridges etc
expensive unless used all the time
cheaper to have a dunk in the village pond 

Problem is, the "dissolved solids" in our village pond are now extra concentrated due to evaporation.

[dave the builder]

Not sure I'd want to be in a hot tub in which someone has "dissolved solids".

Think bath water,  skin, hair, cheese etc 

plus hot tubs require heating and pumped water ,new filter cartridges etc
expensive unless used all the time
cheaper to have a dunk in the village pond 

Problem is, the "dissolved solids" in our village pond are now extra concentrated due to evaporation.

Well, as DG would say "top up and report back " 

[Doctor Gollum]

Actually I was going to run with eat the carp and fill the pond... 

[dave the builder]

Actually I was going to run with eat the carp and fill the pond... 

Sorry Doc 
I see now,"top up and report back" would be  sticking a plaster on, rather than solving the problem once and for all
clearly, I should have looked at the bigger picture