Are you sure? The Greater Vancouver Regional District has never given notices about the switch to Chloramine. Usually they alert all the pet shops (like when they increased the concentration of chlorine) or atleast post a newspaper article. I notice that you are from Victoria........ maybe when I posted GVRD you mixed that up with Victoria?

I checked the GVRD website www.gvrd.bc.ca and they mention nothing about chloramine only that they use Ozone as a primary disifectant and chlorine as a secondary disinfectant.

Cheers,
Victor Veng68

from the link you posted
"Secondary Disinfection
As water flows through the distribution system, the disinfectant used at the primary stage gradually breaks down. This creates the potential for bacteria to grow in the water. Secondary disinfection with chlorine is used to continue safe-guarding the water as it travels to homes, businesses, and industries in the Lower Mainland. Ozone cannot be used as a secondary disinfectant because it breaks down too quickly."

dollers to donuts I will bet that there chlorine addition is in the form of Chloramine as chlorine breaks down to fast. Oazone is only a new (sence 1998) primary disafenctant.

Steve

I send them an -email to make sure. I think it's chlorine because if they used chloramine I think there would be a lot more unhappy aquarists around the Lower Mainland. I'll keep the baord posted.

Cheers,
Vic Veng68

the problem with this is as I was reading there water report then mentions that there are frequently high levels of amonia causing a disinfectant smell.. the problem with this is chloramine is basicly chloriene added then amonia added they mix and you have chloramine. so if there is amonia present in the water and they are adding chlorine then there is a good chance they have a end result of chloramine. maybe ask them about this also.

Steve

Any update from the GVRD?

A few weeks ago, my RO filter was plugged up and I didn't want to wait to get a new carbon block so I thought I would do a small water change with tap water. I thought it might be OK because I've used tap water for top-offs before. Well, this time after the water change, I lost 2 acro frags and my frogspawn bleached and everything in the tank looked unhappy. The tank turned cloudy and I got a lot of brown algae. I smelled the tap water and there was a chemical odour of some sort. I'm guessing that the chlorine was what killed off the algae/zooxanthella in my tank. The good news is that 2 weeks later, my tank is almost back to normal (except 2 of my acros is now brown).

By the way, where's the cheapest source for membrane replacements? Does Aquasafe sell just the membrane? I haven't found any EBAY auctions on membranes. They just have prefilters. Can I put a 100 GPD membrane in my 60 GPD unit?

before i had a 120 and used jsut RO and i had a bad cynao problem,
and now with the 280 i filled it with TAP WATER :redface: ANmd then got a RO/DI WATER going and switched to that and what a difference..

ANY WAY FOR THE EXTRA we always say go the distance with the RO/DI
never again will i use RO

Mike