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  #1  
Old 02-10-2020, 02:47 PM
CSR1978 CSR1978 目前離線
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Question What do the dosing recommendations really mean?

I've always wondered what manufactures really mean when they give dosing instructions based on "gallons."

For example, Korallen-Zucht gives dosing instructions for their additives in terms of X ml or X drops per 25 gallons.

Gallons of what?

Is it based on the rated tank size (my aquarium is a 135 gallon glass box), actual display tank water volume (I have calculated about 107 gallons after subtracting rock, sand etc.) or is it the total system volume (my system volume with the sump is 212 gallons)?

As you can see, dosing could be off by double if I choose the wrong one.

Does anyone have THE DEFINITIVE answer? Is there even a definitive answer?


Just putting some of my thoughts here:
If it is based on system water volume including the sump, it makes sense if you are dosing something that treats the water (like Alkalinity), but what if it's food, and less about the water and more about the animals living in the water. In that case, wouldn't the food additive (Such as Amino Acids or Coral Vitalizer) be based on the quantity and size of the corals? If so, wouldn't an estimate based on the size of the display tank or the amount of water that actually fits in it, be a better approximation of the amount of food needed to feed the corals that might fit in the aquarium of that size?

It would be great to know the actual biomass of the living creatures in the tank, but realistically, you can't know. But there is only so much coral that can fit in a 50 gallon vs a 100 gallon vs a 400 gallon tank. So the tank size could be a good estimator for the average amount (if you qualify the instructions with "heavily stocked" or not) of coral. That's why perhaps the sump volume doesn't matter since the sump could be huge or small, irrelevant of the tank (think AIO tank vs sump under tank vs fish room).
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  #2  
Old 02-10-2020, 09:04 PM
jacky jacky 目前離線
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Net water volume
In your example, 107 gallons

"Gallon" = US gallon
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  #3  
Old 02-11-2020, 03:00 AM
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G.Alexander G.Alexander 目前離線
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If it comes to coral coloration and nourishing products the corals stocking level does play a role also, same as the growth speed of the corals. All the recommendations made from korallenzucht are based on a medium to full stocked system with good corals growth.

G.Alexander
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  #4  
Old 02-11-2020, 08:29 AM
CSR1978 CSR1978 目前離線
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Quote:
Originally Posted by G.Alexander View Post
If it comes to coral coloration and nourishing products the corals stocking level does play a role also, same as the growth speed of the corals. All the recommendations made from korallenzucht are based on a medium to full stocked system with good corals growth.

G.Alexander


So to sum up????:

All the recommendations made from korallenzucht are based on a medium to full stocked system with good corals growth using the net display tank water volume (aquarium less rocks and sand, etc).
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  #5  
Old 02-12-2020, 04:12 AM
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G.Alexander G.Alexander 目前離線
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It is based on a total net water volume (tank + sump).

G.Alexander
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