Dwarf puffer question

  • We are currently upgrading MFK. thanks! -neo
You just have to do half saltwater and half freshwater for your water changes. Use Ocean salt, not "aquarium salt". Whatever the container of salt said to add, just do half.

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Pretty much the same as fresh, except get a hydrometer, pre-mix the salt and water together to match the salinity of tank water and fill it back up...


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Thats why you need something like a hydrometer which measures a waters salinity...


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hydrometer is a poor way to measure specific gravity, not salinity, they will be effected by room temperature and water temps so not too accurate and not worth the weight in plastic.

Get a cheap refractometer of ebay or something cause those can be calibrated and will show salinity and specific gravity to the tee.

With water changes I would mix your water change solution prior in a separate bucket and allow for the params to settle and fully dissolve the salt with some circulation. You would need to keep your tank topped off with treated tap or RO/DI to keep the salinity in check between water changes and that will help make water changes easier since you only replace the amounts of salt removed from the tank during the water change and if the water salinity is the same as when you started the it's a simple percentage type water change.
 
Hydrometers are fine for a BW tank, since the SG doesn't have to be exact. SG of 1.005 is recommended for F8s, so using 1/2 SW, would be way too high.
 
Yea, I just use a thermometer/hydrometer (3 bucks at petco), it works by bouyancy, brackish fish are tolerant of slight changes and mines always between 1.04 and 1.06. I've had it in salt and it worked fine too so I believe it ot be pretty accurate but you can get more accurate ones for 10 bucks
 
The plastic boxes are much better, as they aren't dependent on temp.
 
I would imagine being more accurate and less fluctuation or sudden increase/drop in salinity would be less stressful during water changes for the puffer.

if they are that tolerable of params then I guess that's all that matters. but I have seen refractometers online go for about as much as a hydrometer would go for locally if not much more.
 
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