I bought a project 210 gallon. 6 ftx 24 x 29 it has no brace on top. i purchased a new trim brace that has 2 plastic cross braces seperating the top with sections of 3. questoin is seller told me it had glass braces on it, but they broke. does anyone have a 210 that could tell me the thickness,size, and placement of these glass braces? or is the plastic brace all it uses. my opinion is plastic braces may not be sufficient. i own a 60 with a thick 3/8 glass brace in the middle about 8 inches long. ideas?