You can do a few things. You can make a canopy for the top of the tank or you can use some plexi-glass to make covers for it. Plexi is easier to use than glass since you can cut it any way you want for your equipment.
If I were you I would reduce the water level in the tank. It is on the road to failure and you want to reduce the stress. What is the center brace made of? you will probably be better of repairing the one in there rather than trying to remove and replace.
The 2/4's will work untill you build your canopy. Now for how fat to keep them away that depends on if you have a cover over your tank or not. If you do not then I would say you need to wory about the vapors from evaporation and any splashing you may have from filters. My canopy has a clear...
When my son was 2 he would not sleep at night and would fuss. Planting him in a chair infront of that tank would calm the savage beast and he would enjoy that for hours. It is very peaceful.
Being IKEa furnature I would say no. You would have to find old school furnature that is made out of real wood. As stated a 25 gal will weigh 208 lbs in water and then figure the tank, gravel, and decor. So figure you need a stand that will hold 300 pounds to be safe.
No fish can see blue light that is why it is used to simulate moon light. If you are going to use the blue light you need to have some dark spots that the fish can hide in if they want. The whole moon light thing is used more for salt water tanks as it helps coral life grow. You can get all...
They lose their spots when they are stressed, but that is not the only reason. I have 3 3spoted in my tank and they all get along. They lose their colors quite often and I have been told that is normal. I was told they tend to show their spots as a defense mechanism and for mating. I do not...
Go to http://www.garf.org/ and look on the left hand side. Find the file DIY pages and open the sub directory "Tank Building". Punch in your desired sizes and go from there. Plexi tends to be more expensive then glass.