2 Fish Tanks - PLEASE READ DESCRIPTION BEFORE MESSAGING (Rushenden ME11)

2 fish tanks, ideally both to go together.
Both have a possible leak, the black lidded one has got a light the other one doesn't, but the lid from the black one fits on both tanks.
They are the same size, the silver lidded one is just a little taller in height, otherwise they are both roughly 60cm long by 30cm wide.
Both tanks are roughly between 50 litres and 60 litres.
Please do not use these tanks straight away, we have had both up and we filled the silver one which we got today and noticed water under the shock base, but we're not sure if it's water that leaked over the side where we filled it, or if it's from a leak.
The black one we bought and got the money back from it.
We have resealed it, but believe there is another leak somewhere.
So both tanks will need resealing before use.
Both to ideally go together as we haven't got the space to store them.
Both need gone before Tuesday 25th as we are ordering a new tank to be delivered then.
Collection only from Queenborough ME11 area.
If needing delivery we are unable to help, sorry.