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#1
10-25-2007, 08:52 PM
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I am going on 7 months of having my 6025nano and by the second cleaning (despite being ultra careful) the bracket snapped. I also have a slightly rusty impeller but wasn't sure what to do about it.
I purchased 2 Hydors (a 4 and a 3) from J&L and both work well but again the impellers are rusting. Funny enough I looked at the Hydors being sold at my local store and they all had ceramic shafts. Does anyone know if Hydor makes different versions of their models? My local LFS says their cost is more than J&L sells for so that makes me wonder.
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Mark...  290g Peninsula Display, 425g total volume. Setup Jan 2013. 
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#2
10-25-2007, 09:08 PM
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Tunze Nano Streams
Ya, I have had 2 6025s for around 6 months. I like the look of them and how they push the water, but I have had simmilar issues with 2 rusted shafts, and have had to replace the C clamps 2 times (at least). Not only did the clips on the clamps snap off but the actual C part cracked and did not propery hold the head after a while. I have decided that when cleaning these heads to leave the heads in the clamps as not to break the C clamps. As well I am now extra carfull when searating the magnets from each other as to only hold onto the actual puck part of the magnets and not the clamp or head.
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Ted ------------------------------------------------------- 33 gallon sumpless tank, Remora HOB skimmer, 2 6025 nanostream powerheads, XP3 canister filter for flow and carbon, Phosban reactor running Zeovit, 4 HOT5s 2 10K and 2 actinic. 2 Clowns, 2 urchins, snails, frogspawn frag, GBTA, and now 3 Hairy Mushrooms.
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#4
10-25-2007, 09:33 PM
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C clamp replacement
No they did not replace the C clamp only the heads when the shaft broke off.
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Ted ------------------------------------------------------- 33 gallon sumpless tank, Remora HOB skimmer, 2 6025 nanostream powerheads, XP3 canister filter for flow and carbon, Phosban reactor running Zeovit, 4 HOT5s 2 10K and 2 actinic. 2 Clowns, 2 urchins, snails, frogspawn frag, GBTA, and now 3 Hairy Mushrooms.
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#5
10-25-2007, 10:14 PM
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Im still running my original 6025, the one with the flat cord. Been doing so since march. The first time i tried to clean it i broke the 2 lower clip that attach it to the magnet. I really like the flow better than my Korolia 4, not comparing gph. The only real problem i have with it is that the impeller sometimes stalls when i restart the pump. I usually just jam in my stainless tweasers to give it a little push start with no ill affects.
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#7
10-25-2007, 11:58 PM
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From what ive seen of the two the Tunze 6025 shoots out more of a cylindrical stream whereas the korolia 4 is more of a cone shape (almost shoots out in a 180 degree angle from the impeller) and does not travel as far. In my case, a 20g i didn't want to have more than one powerhead so the tunze won because it could penetrate deeper and created less dead spots in my tank (i still have a few im fighting with). Maybe you could up the size to a 3 or 2, but i had corals too close to the powerhead that couldn't handle the flow.
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