
is buying your own under the sink RO system work out to be cheaper?
is buying your own under the sink RO system work out to be cheaper?
Yes, of course it would. I dont know how much they go for in the UK, but say you bought 25L per week @ 3 pounds, thats 156 pounds a year. Even over the course of several years, with a cartridge replaced when neccessary, it would work out cheaper in the end.Its all about thinkin long term sometimes.
A friend of mine was saying that at his LFS you buy a big barrel full for £10 and then you can just go an top it up for free. I think that seems quite a good deal.

A friend of mine was saying that at his LFS you buy a big barrel full for £10 and then you can just go an top it up for free. I think that seems quite a good deal.
do you use RO water if your tap water it not suitable for a tank?
i kno you use it for marine but is there any other reason to use it for freshwater?
As you know, Reverse Osmosis (RO) and Deionized (DI) water is mainly in marine tanks. This is becaused tap water contains nitrates and phosphates. Marine tanks should never have a reading of phosphates and nitrates should ideally always remain at zero and should not exceed 5 ppm. Unless your tap water is absolutely pristine, (which 99.9% are not) tap water should never be used in a marine aquarium. In freshwater aquariums, tap water is much more friendly. Ideally nitrates should be under 25 ppm in freshwater aquariums, but tests show that no ill health effects occur until roughly 90 ppm. Phosphates are also not an issue in freshwater aquariums as well.do you use RO water if your tap water it not suitable for a tank?
i kno you use it for marine but is there any other reason to use it for freshwater?