First off, welcome to Tropical Fish Keeping forum.
Now to your issue. You don't mention if you have live plants, so I will not go into the matter of light suitable for plants. But the light you do have is certainly not good plant light, but it will benefit algae which can use any light if it has nutrients.
You have termed this a bacterial bloom, which would cause a whitish cloudiness to the water (as opposed to a greenish cloudiness which would be algae or green water as it is known). Adding bacteria [the BioZyme] is not a good idea when you clearly have a surplus of it. I strongly recommend you stop using this product. Once an aquarium is established (cycled comes first, then things settle down and the tank is established, or should be) there is a very complex and somewhat delicate balance that occurs naturally. Several things contribute to this:
- The number of fish, the size of the fish, and the type of fish--their behaviours may release pheromones into the water than affect other fish and they respond, etc--is all critical.
- The interactions between the fish (all those afore-mentioned aspects) and the water volume.
- Live plants if present.
- The depth of the substrate.
- The water parameters (hardness and pH and temperature).
- The type of fish food added and the amount.
- The frequency of water changes and the volume changed.
- Any substances added (conditioner, fertilizer for plants, bacteria supplement products, salt [this should never be added but it impacts things if it is], medications, etc).
- Wood or other natural objects.
The less "stuff" going into an aquarium, the better because the tank can use nature more than intervention to find the biological balance. Once established, nothing should be done to upset it unless it is absolutely necessary [thinking here of medications which often affect bacteria, fish and plants so "restarting" is necessary afterwards]. Adding excess bacteria via BioZyme is upsetting the natural balance.
As far as I know, the spectrum of lighting has little if any impact on bacteria. So the actinic/blue light should make little difference unless of course you have live plants, then it will be significant as the plant growth is affected and this affects the biological balance. However, it will encourage algae, so you may wish to change the tubes for natural full spectrum or cool white which will still give you a "cool" look without the excessive blue. This plus live plants will handle algae, once everything is balanced.
Now to your fish stock, which is too great for a 10g, and moreso if there are no live plants [yes, live plants can benefit in so many ways] and with minimal water changes. The nitrate level is not mentioned, but I would expect it is high. As long as you have this many fish in such a small space, a regular weekly water change of at least 50% would help stabilize things. However, be warned that water changes worsen bacteria blooms, and it is better on this score to let things stabilize without intervention--but here we come to the dilemma. Without water changes the fish will suffer due to the organics and nitrates, and this will feed the bacteria. Removing the loaches [which need to be in a group of 5+ and get much too large for less than a 4-foot tank] is a good start, along with larger weekly water changes using just a good conditioner.
Water tests: you should check the ammonia, nitrite and nitrate in the tank. You should also check your tap water for all three, as any of these can be present and this is worth knowing in order to deal with it before it affects the tank.
Byron.
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