30 gallon bowing out

[t-bone]

Just noticed that the front glass on my 30 gallon tank is bowed about 3/16" out in the middle. Bow is much more at top of glass than bottom. Is this normal? May have been this way all along, but just noticed and freaking out a little. Recently got a 55g tank(much thicker glass) and it doesn't bow out at all. The plastic retainer that goes on the top of the glass has a cross bar on the 55 but not on the 30, could that be the reason?

 

[sign guy]

is tish a speacial tank or a mass produced tank. how old is the tank. what kind of lights do you have and how far off the tank are they?

 

[t-bone]

Tank is 2.5 years old, bought used, so not positive its standard but sure looks that way. Lights are coralife 2x65w pc, on legs about 2" off top surface. I have glass hinged lid, that's how I found issue, nice straight edge of glass lid sits on plastic rim, perfect in corners and gap in middle.

 

[sign guy]

well I wouldnt be too woried about 3/16 of a bow busting the tank and your lights are not the issue...... if it bothers you you can emty the tank and add a clear 2 inch piece of lexan as a center brace. you would attatch it with nylon nuts

 

[peachie98]

My 40 gallon acrylic bows too...but it's acrylic so I don't worry about it (since it bends easier than glass). It's also 10 years old and has been like this for quite a while.

 

[t-bone]

Thanks, probably fine just never noticed it till now. Its been a few days and no further bowing so probably just normal with the pressure of the water, length and thinness of front glass and no middle support.