dehumidifier question

[gmann]

Thanks for the tips. I actually was thinking of putting a cover over my sump.

[GQsmooth]

Run you're HRV unit or vent fan in the winter...

[rayjay]

I tried a dehumidifier and it might have helped some but not a lot. I guess it depends on how many tanks and total surface area of water. Just remember that when the dehumidifier lowers the moisture level, it makes the evaporation rate go up so I had to also top up the tanks with more water than before.
I ended up putting in a double core HRV and then had to replace my windows and doors because I left things go too long.
Forgot to mention, when covering up the top you make it harder for a proper gas exchange to occur resulting in lower pH.

[hondas3000]

if you are in a strata building then try to find a humidity control switch that let you set to certain humid % you want, and when it is getting higher than the setting your washroom fan will kick in get the air out. Unless your washroom have no fan or a weak fan then it is no good, but this way it is cheaper for you and it works.