Hey guys, first time registrant and poster but I used this site extensively for research prior to getting into the hobby.
I'll try to get to the point: I bought a 10-gallon tank and kit (saved a little money with the Christmas sales) in the middle of last week. It's lightly planted right now but I'd like to plant it a little heavier later on. The plants are doing great and I can see growth with all of them.
I added two long-fin black skirt tetras the day before Christmas. I know they're a schooling fish, and of course I was warned before purchasing them from my LFS, and they seem to be doing just great for the most part. I'm definitely going to add more tetras, I'm just wanting to slowly acclimate them as this is a new tank.
The issue I have is that the fish seem to be terrified when I turn on the lights. I try to keep the light on 10-12 hours for the plants and the fish. With the lights off they swim around the tank and eat and everything with no problems but practically as soon as the lights come on, one hides under the rock and the other hides under one of the plants. I turn the lights back off and within a minute they're back to swimming around the tank like normal. The kit came with two 15w (each) incandescent bulbs but I switched them for two 10w (each) compact fluorescent bulbs. The plants seem to be doing well but the fish not so much.
I know tetras prefer less lighting so since my tank is mostly planted on one side (two fake plants on the other) I put one fluorescent and one incandescent in the hood and they were still scared. They will swim out every now and then but they're definitely stressed and swim back to their hiding spots after a short time. I've been testing my water daily and everything seems to be running as it should; I can definitely post if requested.
Is this too much light? Do they just need more time to get acclimated? Being a schooling fish, once more are added will this ease up tensions? Any tips or advice would be much appreciated.
Thanks in advance.