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Do you have a lid over your tank?


HelifaxNZ

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Except it means I have to refill my topoff every second-third day when the lids are off and all the windows in my house get covered in condensation

get a bigger top up?!!! mines 220 litres (more than 20% of the size of my setup) well worth every cent buying a drum that size. turn the tap on for the day once every 6-8 weeks! my middle names lazy :D

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I love the fact that the computer is on FNZAS :lol: :lol:

Ceiling cavity doesn't sound bad, any space in the cupboards under the tank? Whats behind the curtains? If it's outside could you have it out there then pump it inside?

How much beer is at stake?? :lol: :lol:

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I love the fact that the computer is on FNZAS :lol: :lol:

Ceiling cavity doesn't sound bad, any space in the cupboards under the tank? Whats behind the curtains? If it's outside could you have it out there then pump it inside?

How much beer is at stake?? :lol: :lol:

Nope, no room under the tank, it's completely taken up by the sump.

That's a window outside those curtains. I've thought about putting a barrel out there, but then I don't have a good way of getting a hose back into the tank. What I'm thinking of doing is I'll replace that shelf with a big cabinet and I can put a couple water containers in there.

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I have a 25L container for the topoff, gizzygirl topping off the tank run by a float valve in the pump section of the sump. When the topoff runs out I have maybe 6 hours before the water level in the pump section(the only part where the water level varies) drops enough to start putting bubbles into the tank. So, every 3-4 days isn't going to work.:) Actually, 3-4 days the pump would run dry. I think I'd have about...Hmmm, 1 and a half days before the pump runs dry. I based the sizing of the pump section on the evaporation of my previous tank which didn't have metal halides or an open top, sized it so I should hopefully have about 5 days before it runs dry...

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So the concensus is to keep the lid off because of the heat issue more than anything else.

Light, then heat. ALSO there is kalkwasser, which is a very cheap way to add calcium to the tank and buffer PH. The more evap, the more top-off the more kalk can be added.

Pie

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Light, then heat. ALSO there is kalkwasser, which is a very cheap way to add calcium to the tank and buffer PH. The more evap, the more top-off the more kalk can be added.

Pie

I've been wondering, if you have a kalk stirrer, why not instead of filling the stirrer with fresh water why not fill it from the tank? Then evaporation would be irrelevant.

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I've been wondering, if you have a kalk stirrer, why not instead of filling the stirrer with fresh water why not fill it from the tank? Then evaporation would be irrelevant.

? How does running tank water through the kalk stirer make up for the fact the the specific gravity of the tank will continue rise as more and more 'h20' evaporates?

Pies

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I don't think it would be as effective due to the common ion effect reducing the (already low) solubility of CaOH, so that virtually no additional calcium or alkalinity is added to the tank.

It may also have the opposite effect, causing precipitation of CaCO3 from the tank water (depending on concentrations and pH).

Layton

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Shouldn't have any effect that dosing it with the topoff water wouldn't have. May be able to dissolve less per liter, but you could dose dozens of liters of kalk saturated saltwater compared to only a handful of liters of saturated freshwater.

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