<a href=showthread.php?s=&postid=12683871#post12683871 target=_blank>Originally posted</a> by edandsandy
Ed,
would you recommend the tunze system instead of a CLS?
We still haven't made our final decision on that part of the tank yet.
Both have +/- but I do agree with GSMguy. If you planned out your tank in advance, you can have your pumps hidden....below is a summary of the +/- I can think of for each:
CL Strength:
- No visible pumps
- If used OM you can have random wave with different choice combination
CL Weakness:
- Pre fix location as holes are pre-drilled
- Add on to risk with add holes at bottom of tank
- Unable/ difficult to service over period of time once CL get stuck with Calcium composites, algae, etc...
- Consumer more electricity/ power
- If tank is with sand bed, it increases the risk of the sand going into the OM and getting the turn drum stuck...
![Frown :( :(](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f641.png)
happens to quite a few people I know
- Not flexible flow as the holes you pre-drill are not changeable
- More plumbing work
Streams Strength:
- Wider and more flexible flow (you usually can get much more flow out of a stream as there are choices of streams you can buy)
- Easy to clean
- Reduce flow ability during feeding time or night time (of course you need a controller but the feature are there)
- Choices....so many choices and combination to suit your needs today
- No add plumbing required
Streams Weakness:
- Price.... we all wish it could be cheaper
- Unsightly inside tank of not properly planned
- Size - but this is getting better with the the new Tunze Streams and other brands like VorTech coming into the picture with smaller overall surface....
- Cabling - a lot more cabling to hide
- Uncover/ protected pumps can be a fish and anemone trap !!
- Can create sand storm if you are planning a sand bed (but this can be solve by either the right location of the pump placement or the size of sand grain you used (I used 3-4mm size grain and no sand storm form my 2 x 6201)
Overall cost for both I think it's about the same, if you add in the add plumbing for CL. I was also originally wanted to go for CL as I just hate to see pumps in my display but after much thoughts, I went with Streams and design my tank to get them hidden from sight
Hope you find it helpful Sandy. By the way, what type of reef tank are you planning?? This will help to see what type of flow you would required, thus helping you make your decision.....
Cheers......:rollface: