I am new here, and hopefully posting in the correct forum... I am trying to decide if I should have a whole home dehumidifier installed or if there are other options. I wanted to get some opinions before I call my local HVAC and have them try to sell me something if I don't necessarily need it. So I have approximately 1200 sq ft upstairs with about a 800 sq ft unfinished basement. The house has a permanent wood foundation with 2x6 walls with fiberglass insulation. The house is a bi level and the foundation is only about 4 feet underground.. The problem is I have a 220g fish tank with about a total water volume of about 300g. So on any given day it evaporates about 3-5g of water, give or take. The house is sealed very well so I always have condensation on the windows and during this last winter I had moisture between the insulation and the exterior wood of the foundation, and also a lot of condensation around my doors, etc. I want to get rid of the moisture on the foundation walls and I don't want them to rot before I can have a concrete foundation put in. I guess what I am wondering is if a while home dehumidifier is the best option or are there others? I've heard fresh air exchangers are useful. And no, I am not getting rid of the tank. Haha. Any help our advice is greatly appreciated and sorry for the long read.