changed a filter bag after the water out, what's wrong, great God to help, thank you!
For this problem a day, one possibility is that the water quality is very poor, another look to buy that bag is not a good point, if the filter quality inside the filter media is not properly or may not see water, another is installed on the water after much water, not much it may also be blocked film
The pretreatment is similar to PP cotton, activated carbon and other substances, namely your bag, after the change of the filter bag, the water with reverse osmosis water system requirements, you can water.
Because of the reverse osmosis system is in front of a pretreatment, pretreatment for raw water quality will meet the requirements of water as raw water pretreatment of reverse osmosis system, because they do not do the pretreatment, the particles will be relatively large by reverse osmosis membrane, reverse osmosis system efficiency, which is what you say no water.