teebs

I would agree that the Crystal Pro is mainly suitable for those with nano tanks, where the water volume is less than 100L. However, in the long run, regardless of small or large tanks, the running costs will still far exceed any RO/DI unit. The one I'm getting is a portable RO/DI unit with a 100GPD RO membrane. I'll probably post a review of this unit once I get it set up. Included with the RO/DI unit: 1. In-line 5 micron PP sediment - to remove dirt, sediment, rust and sand particles 2. In-line granular activated carbon post-filter - for pure tasting water 3. 100 GPD RO Membrane Housing 4. Purolite Clear DI (De-Ionized) filter - to remove hard water minerals 5. In-line granular activated carbon post-filter - for pure tasting water 6. TFC (Made in USA) 100 GPD (~ 380L per day) RO Membrane - to remove 98% to 99.99% of all chemical and harmful dissolved elements and 99% of all bacteria 7. Two-Way Switch 8. 5 feet 1/4" tube for Tap Water Incoming 9. 5 feet 1/4" tube for Pure Water Outgoing 10. Flow Restrictor 11. Ball Valve for DI Outlet

Desi, you are lucky that the TDS of your tap water is much lower than mine. If your TDS was 165 ppm, you would be changing your DI catridges every month. Do take note though that once the Di resin is exhausted and you continue to run water through it, the DI resin will leach all the ions back to your water which makes is doubly bad. This is the information that I got from a supplier of RO/DI units in USA. I have already changed all the catridges of the Crystal Pro unit twice and I have finally come to the conclusion that it is really too expensive for me to continue changing catridges every 2 months. The worst thing is that the catridges are non refillable so there is no way for me to refill the DI catridges with DI resin either. I'll probably be receiving my RO/DI unit from US within the next 2 weeks and I've got in a set of replacement catridges and 1.5LB of nuclear DI resin also. The RO/DI unit I'm getting has dual water outlets, 1 for drinking and 1 for aquarium.

You are quite correct to say that at 200ppm the Crystal Pro DI will last only ard 200L before it KOs. For my case, it lasts ard 240L before it KOs and my tap water is at 165ppm. I'm also changing to a RO/DI unit which I'm getting from US soon.

If your tank has nothing to showcase....then my tank has less than nothing liao...

Choa Chu Kang - 96 ppm Jurong West - 165 ppm Jalan Bahar - 200 ppm Clementi - 125 ppm Bishan - 112 ppm Bukit Panjang - 92 ppm Tampines - 111 ppm AMK ave 9 - 77 ppm

Do you use the Crystal Pro unit for making DI water for salt mix or you use NSW??? The Crystal pro unit comes with a TDS meter. Alternatively, you should be able to get a TDS meter at most LFSes. I think AM has one for sale at $45. See the link below. http://www.aquamarin.com.sg/productsDetail.asp?productid=845

I think INDIAN CHIEF made a typo error. Should be TDS...or Total Dissolved Solids... Use a TDS meter to measure the TDS reading of your tap water. The NTUC housebrand distilled water has TDS reading of 2-3ppm.

Wow...My TDS reading is still not the worst...

Where is the collection location????

U finally upgraded to a G2???

Indian Chief...Ur tank is a doremon tank...Ur house is also a doremon house...15K members...sup sup suay lah...

Not that I know of...

So Cheap ahhh...Mai Tu Liao... Who wants faster take hor...

Yeah, I think 165ppm is crazy. Will be shipping in the RO/DI filter set next week. Probably will be getting additional 10 lb nuclear DI resin also.

Lunch time....

Another one for you...

Indian chief...where are you...

A pic for our indian chief...

Tentatively 1am. RB will be open from 1am to 4am. Final confirmation will be at 5pm+ later today.

U are Indian chief aka TC King...

You have all the time from now till 6am to do it.

Check out Club Med Bintan. http://www.clubmed.com.sg/cm/villagesHeading.do?CODLSC=RBIC&PAYS=362&LANG=AE

he is the one who upgrade from nano to 4 footer leh...not me...

U mean Ah Siang right???

I would think it would be quite difficult if not near impossible to use the raynox DCR250 for a tank macro. A couple of issues surface: 1) The focusing distance for the Raynox DCR250 is ard 5cm max and depending on the zoom you use, it could go down to 2 cm focusing distance 2) Due to the short focusing distance for the Raynox DCR250, you would almost certainly have to use an U/W casing to take the U/W macro shots 3)The DOF when using the Raynox DCR250 is very thin. This means that if you want the entire coral to be in focus, you would need to position your camera parallel to your coral which would be very difficult in any tank.