If you're watering the plant section with rain water, I don't know how much the water drops flying from the water section would affect it. It seems that if it's only a few drops here and there, the rain water would be enough to dilute it to an acceptable level. I think a lot of it really depends on how much splatter gets into the land section. Mixing tap water with distilled (IMO) would make this less of an issue.
As far as feeding, I haven't fed my vent. anything live in a long time but I do occasionally (1/monthish) give them a diluted solution of 5/1/1 fish emulsion fertilizer. I don't however recommend using this inside as the smell tends to be pretty nasty. The link Pappy posted is a great one to get ideas on what others are doing.
As far as feeding, I haven't fed my vent. anything live in a long time but I do occasionally (1/monthish) give them a diluted solution of 5/1/1 fish emulsion fertilizer. I don't however recommend using this inside as the smell tends to be pretty nasty. The link Pappy posted is a great one to get ideas on what others are doing.