Could use opinions about max weight for this countertop

[crackafoo]

Any structural engineering/contractor savvy guys could tell me what they think.
I've had my 40 gallon tank on this built-in "wet bar" counter top for the last five years. I don't see that there's been any problems (stressed/bent/cracking cabinets etc).
However, I just made a 10 gallon sump that will sit to the left of the tank in between it and the wall, to put my skimmer, heaters, probes, filter media in... So now a total of 50 gallons on top of this counter.

How much weight can this kind of cabinetry usually hold? Would you be worried?

Try to ignore the algae and mess .. maintenance in progress.
Thanks

[acbaldwin]

I'm not a construction guy, although I'm pretty handy, I don't think you'll have a problem. Way worse stands carry way more weight on the regular. Really I just want to say that's a great tank and nice scape! Which tank is that?

[crackafoo]

Hey thanks, I'll post another picture once everything is its place and clean. Its a Miracles aquarium tank, 48x14x14.

Appreciate your opinion, yeah I didn't even think about it till this morning when I was about to start setting up the new addition.