Why do you have them in an aquarium? It serves little to no purpose to keep these plants enclosed in glass. They absolutely don't like the humidity.
Your lighting may be sufficient for now, but will soon be woefully inadequate. The sun's output is approximately 10,000 lumens/sq. foot. Unless you're lighting with an arc welder (or similar), there's no bulb that can beat that. If you were growing plants that require high humidity then growing in an aquarium makes sense, but this is not the case with Cannabis.

You don't "need" fish to grow hydroponically, it's just another method by which to grow hydroponically.

I grow outdoors, but know about lighting and water because of my aquatic experience (which is why your thread title caught my attention).

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