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31-01-2005, 12:15 AM | #1 | ||
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oversized tank gives you more stable water parameters should something goes wrong. oversized chiller gives you the extra cooling buffer should the ambient temperature soars for no apparent reason. oversized skimmer gives you the extra loading buffer should you face sudden die-offs that would otherwise sets off a chain reaction that leads to a tankcrash. so in summary, oversizing gives you the extra cushion rather than just barely meeting the minimum requirements and when the time comes for the real test, the *undersized* or *just-barely-enough* equipment will be the weakest link in your system |
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31-01-2005, 12:28 AM | #2 | |
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31-01-2005, 01:59 AM | #3 |
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true man,agree with roidan oversize stuffs allows more errors and less trouble when upgrading.
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31-01-2005, 01:19 AM | #4 | |
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even if wanna upgrade...still can use back cheers! |
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31-01-2005, 05:34 AM | #5 | |
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hmm, tough answer
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31-01-2005, 08:39 AM | #6 |
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manufacturers do not just make one size because there are different budgets for different people. Not only in terms of the upfront cost of the chiller, but also the running cost. One may get a chiller just just barely adequate for his system with everything taken into consideration including MHs but when the temperature soars during the hot months, the chiller will be overworked and this runs into hours and hours of operation without stoppage. And you should have realised by now, manufacturers only give a guide, but not definitive runtime.
Chiller X say it is rated up to 200gallons, Chiller Y says that it is rated up to 300gallons. Chiller X run 12 hours to keep the 200gallons at set temperature whereas Chiller Y runs 6 hours to keep the same 200gallons at same set temperature. So if one run chiller X for 12 hours and he feels that running the next higher model will result in less hours and less overall consumption despite higher amperage, he is well advised to go for the higher model as in sudden hot spells like i have mentioned , the chiller is still able to cool the system in a decent number of hours. Some so called adequate chillers during hot spells seem to run without stoppage. So it is no longer an issue about just factoring the bare essentials, but you got to give equipment safety factor which is already technically stepping into the oversizing region. As for skimmers, it depends on how oversized the skimmer is for it to handle emergencies. If in normal circumstances and there are already considerable nitrate levels, this just goes to show that the skimmer could not capture most of the waste before it starts to break down finally into nitrates and even the denitrifying portion of the system eg. dsb, LRs, denitrator...... cannot handle and thus there are residual nitrates in the system. if in normal circumstances and the skimmer is upgraded till you see the nitrates falling to near testkit-undetectable levels, ceteris paribus, this means that the skimmer has improved alot in capturing the wastes before it breaks down into final nitrates form and even if some wastes escaped the skimming process, the denitrifying portion of the system was able to cope with the conversion. But at this level of skimming, considerable wastes still escaped the skimmer but fortunately, the denitrifying portion was up to the job for nitrate conversion that is why we read near undetectable levels. But if you use lab accurate equipment, there will be still nitrate levels. Finally as you go even larger, even more waste will be captured by the skimmer before it breaks down. This will deprive the denitrifying portion of nitrates and thus superlow levels and if you aim for a very nutrient free system, this is what you have achieved. But of cos if you aim for a nutrient adequate system, you do not have to go this far. But at this level of skimming, there is so little residual waste that escaped the skimmer that in event of sudden dieoffs, the skimmer will pick up so much waste before the waste has a chance to turn into the toxic ammonia/nitrite spike that is the start of the vicious cycle that will wipe out the tank. remember, in sudden increase of waste, bacteria populations do not reproduce fast enough to convert the toxic ammonia further to nitrites and nitrates...and by the time the bacteria population copes, more and more organisms would have died and this comes back to the vicious cycle again. So only an oversized skimmer will be able to stop disaster as its first stage of manifestation: crude waste level getting an adequate or the next rated skimmer is just to handle things well during normal circumstances but in emergencies or peak demand, they will not cope and one can only hope the ammonia and nitrite toxicity will not impact so much. Why leave things to hope when you can stop disaster at the waste level skimmer ratings are again a guide....nitrates is one easy way to see if a particular skimmer is up to the job for your system or not. if there are still obvious levels of nitrate, this skimmer is simply not adequate despite its humongous rating figures. but if you are aiming for a nutrient rich environment for some corals, you have achieved what you want. if there are low/undetectable levels of nitrate, the skimmer is adequate for the system combined with the denitrifying portion of your system. This is probably just right for those who want a relatively nutrient free environment. yawnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn |
31-01-2005, 03:06 PM | #7 | |
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oh roidan thks hor
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In summary, u have already acknowledged the points i stated and u are simply performing a rhetoric. However, i noted that the topic could be sized into efficiency again. becos u have mentioned that waste removal b4 it breaks down. I think all skimmers want to achieve that. In fact, i have already stated that it depends on what u are keeping and trying to achieve. The question was oversizing and the meaning of skimming. |
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31-01-2005, 03:53 PM | #8 | |
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31-01-2005, 09:25 AM | #9 | ||
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wat an example!! tat's a good one, totally out of context... Quote:
pls enlighten. thanks. u cant quote a ferrari as its speed is variable, tat is, u can control the speed. again, out of context. |
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31-01-2005, 10:46 AM | #10 |
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Excuse me, there is much discussion at this present time as to the effects of over skimming and imo, there are no good answers as there are two schools of thoughts.
All protein skimmers remove waste, they also remove a great deal of trace elements required by occupants in the tank besides preventing a drop in the water quality. So how much do you want to replace those trace elements depends on how much you want to skim? So the more you overskim, the more dollars you need to replenish those lost elements and liquid food for your corals. So the question, which school do you belongs to ie skim or overskim |
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