A dehumidifier is a great asset.
You know, another product that is great is that TopMax stuff... making nutes more available... part of that is a chemical process called chelation where a chelating agent, for example, EDTA, EGTA, humic acid, oxalic acid, etc, basically forms a complex with the ferts and prevents them from interacting and combining into unusable/unavailable forms... topmax has humates PLUS all sorts of other yummy goodies that will sweeten up your girls a bit!