Have you checked your RO/di to make sure it is still functioning
correctly? It sounds like your DI is exhausted and possibly your RO is
not working correctly also. Silicates are very hard to remove from the
water (hence the Kent silicaMAXX ro/di systems) so you need to make sure
your DI is fully charged and keep it that way to keep the silicates
undercontrol.

Kim

Thanks Kim, Can u tell me what I need to do to check it? is it just a matter
of replacing the Filters? or is there more