Looks like he is red on the inside of his left eye on that last pic of him... Thats not a good sign at all, and i am afraid you will lose him. In my experience this can be a result of the ray bein exposed to higher levels of ammonia or nitrite at some point.
IMO:
- Lights off
- Thinner layer of substrate (to avoid possible buildup of ammonia pockets)
- Feed bloodworms and shopped earthworms
- Waterchanges every day, i`d say 30%
- Focus on good water movement/circulation
- I would personaly not recommend using any liquid to boost bacteria when the ray is already in the tank... From what i know of these liquids/powders - their mission is to boost the ammonia, so that bacteria starts to grow... with other words it could possibly kill your ray.
IMO:
- Lights off
- Thinner layer of substrate (to avoid possible buildup of ammonia pockets)
- Feed bloodworms and shopped earthworms
- Waterchanges every day, i`d say 30%
- Focus on good water movement/circulation
- I would personaly not recommend using any liquid to boost bacteria when the ray is already in the tank... From what i know of these liquids/powders - their mission is to boost the ammonia, so that bacteria starts to grow... with other words it could possibly kill your ray.