There are different reasons, which makes us aware about the preservation of water among them first is to save up the money. Along with this, to save humanity and existing wild life preservation of water is an essence. These days a lot of water preservation ideas are emerging like as waste water reuse and so on. With respect to this technique, number of companies like Terra Cair and other are selling water treatment objects, which are quite helpful for the preservation of water. I guess initiation and awareness would be the best solution for the preservation of water along with water saving technologies.

Water changes of any frequency and any quantity do not have any effect on the continuous PPS dosing. You can change water any time you like.
PPS is about supplying daily nutrients for each photoperiod in limits of luxury uptake.

Yes! You are right water saving is necessary for every person. And Terra Cair is doing best work in this field it uses the equipments like: DEF Complete Systems, DEF Pumps, DEF Qualified Labs and many more.