Z do u mean realitive humidity at 88% then at flower dropping it to 66%? sorry about you having to draw me a picture BUT IAM dumb enough to try to get my room temp down to 45-50. And about the "slump" pump...everytime i look for one they are all huge - the kind used to drain basements and ditches i cant find one used for hydro or small enough to use in like a 15-20 gal resv. im gonna ck lowes and harbor freight ...many thanks