Never buy a very large glass aquarium.

Stan510

Fish Addict
Joined
Dec 10, 2018
Messages
886
Reaction score
591
I just watched some guy give away 20g worth of busted 400 gallon reef tank (and protein skimmer taller than you) that just exploded. Then,you can watch an older vid of Lucas Bretz's 240 gallon glass tank- rupture.
Go acrylic on 100 gallons or more. They never leak and that more than makes for having the usual complaints of scratches. Even those can be buffed out one day. You can't even do that as a hobbyist for a glass tank with deep scratches.
My 240 is about 40 years old and it's been set up crooked and worse over the years- I once dropped it empty from knee high. Go acrylic.
Oh,and notice how many public aquaria go acrylic now. Even they are afraid of glass...even as just a front pane, let alone all glass.
 

PheonixKingZ

Fish Guru
Tank of the Month!
Pet of the Month!
Fish of the Month!
Joined
May 8, 2019
Messages
15,103
Reaction score
8,913
Location
Lawrenceburg, KY
My LFS’ Monster Tank is acrylic, super sturdy. The logic makes sense.

I also assume it’s generally cheaper?
 
OP
S

Stan510

Fish Addict
Joined
Dec 10, 2018
Messages
886
Reaction score
591
They are..but not exactly a huge discount...but that they cost less is a great incentive.
I once talked to an expert on building aquariums and he said that even if my 240 sprang a leak? I could use a glue that sets underwater and isnt toxic in that small amounts to fish. He made it sound like repairing the largest acrylic tank isn't a tough act.
Once a large glass tank bust a seam? The party is over.
 

bigroof

New Member
Joined
May 3, 2020
Messages
30
Reaction score
17
Location
London
I would also like to buy an acrylic tank. Its not widely available to buy from stores in here in the uk. Well at least the places i normally visit. It all makes sense to go acrylic with what you guys have mentioned. Maybe my next one will be an acrylic custom built tank.
 

Colin_T

Fish Guru
Joined
Jan 26, 2008
Messages
26,236
Reaction score
10,408
Location
Perth, WA
The problem with big tanks is due to poor quality silicon and not giving the silicon enough time to dry. It happens to small tanks as well, someone uses cheap crap quality silicon from China and it degrades quickly and the tank leaks. Bigger tanks have more pressure and when the seals go, there is more pressure pushing the glass out and the entire tank goes.

The glass needs to be clean and free of grease, oil or anything else before the silicon is applied, otherwise it won't adhere to the glass.

Large aquariums need at least 1 week for the silicon to cure completely, and that is in warm dry conditions. It takes longer on cool or damp conditions.

Make sure they use a decent quality silicon that is specifically designed for aquariums.

Get a decent tank maker to build it and put a warranty on it. If you are paying $5000 for an aquarium, it should have a warranty.

Make sure your home insurance covers water damage from the fish tank going bang.
 

Barry Tetra

Fish Aficionado
Pet of the Month!
Joined
Dec 23, 2019
Messages
3,156
Reaction score
1,657
Location
Thailand
Today I have some problem with this particular tank and just learn my biggest lesson: NEVER BOUGHT A CHEAP TANK

I’ve been looking for a cheap rimless tank for my Iwagumi and found a fish store that can make custom rimless tank
(24”x12”x15”) for only 750THB ($23.90)

Today the thing arrived and look at their work!
The glass doesn’t even lined up and doesn’t even touch each other, side glass are taller, silicon is everywhere and there is chips on he glass, no wonder why it’s this cheap for rimless.

I can’t even return them and I don’t know if it safe to use :mad:




03D8F308-7FAF-4D06-A83F-39A1D4AE5BC8.jpeg
BD10B073-214A-44E5-89C3-4E0D666EDE9D.jpeg
70BD43D9-412D-4855-82DA-B78E362A47A9.jpeg
 

Fishfaced

Fish Crazy
Joined
Mar 8, 2021
Messages
244
Reaction score
136
Location
England
Today I have some problem with this particular tank and just learn my biggest lesson: NEVER BOUGHT A CHEAP TANK

I’ve been looking for a cheap rimless tank for my Iwagumi and found a fish store that can make custom rimless tank
(24”x12”x15”) for only 750THB ($23.90)

Today the thing arrived and look at their work!
The glass doesn’t even lined up and doesn’t even touch each other, side glass are taller, silicon is everywhere and there is chips on he glass, no wonder why it’s this cheap for rimless.

I can’t even return them and I don’t know if it safe to use :mad:




View attachment 134347View attachment 134348View attachment 134349
Wow! That is some shoddy workmanship.
You could do better yourself.

I wouldn't be putting water in that personally.

I'd consider stripping it apart and sealing it myself if it can't be returned, as it's 'custom made'.
 

Colin_T

Fish Guru
Joined
Jan 26, 2008
Messages
26,236
Reaction score
10,408
Location
Perth, WA
I’ve been looking for a cheap rimless tank for my Iwagumi and found a fish store that can make custom rimless tank
(24”x12”x15”) for only 750THB ($23.90)

Today the thing arrived and look at their work!
The glass doesn’t even lined up and doesn’t even touch each other, side glass are taller, silicon is everywhere and there is chips on he glass, no wonder why it’s this cheap for rimless.

I can’t even return them and I don’t know if it safe to use :mad:
All tanks should be rimless at that size. Just make it out of 6mm thick glass and your good to go.

It would appear the person who measured the glass, was thinking of using the glass on the outside of the base instead of on top of it. Someone wasn't thinking when they did that. And the silicon looks opaque/ white, which is normally an indication of old silicon.

How does the silicon feel?
Is it hard or firm but slightly squishy?

Take the tank outside and fill it up with water. Leave it for a week and see if it holds.
 

PlasticGalaxy

Fish Herder
Joined
Feb 25, 2021
Messages
1,662
Reaction score
1,197
Location
England
Weird hypothetical question here, but if you were to have an acrylic tank in an upstairs room, would it put less strain on the floor than having a glass tank of the same size?
 

Slaphppy7

Fish Gatherer
Joined
Jan 20, 2021
Messages
2,484
Reaction score
1,869
Location
SE Texas
Weird hypothetical question here, but if you were to have an acrylic tank in an upstairs room, would it put less strain on the floor than having a glass tank of the same size?
Less weight = less "strain", but how significant of a difference I'm not sure....the larger the tank, the larger the difference, is my guess 🤔
 

PlasticGalaxy

Fish Herder
Joined
Feb 25, 2021
Messages
1,662
Reaction score
1,197
Location
England
Less weight = less "strain", but how significant of a difference I'm not sure....the larger the tank, the larger the difference, is my guess 🤔
Hmm... Only wondering since I'm going to be cheeky and ask for a 5-6ft tank for my birthday, but my parents have already (understandably) voiced their concerns about the floor caving in lol. I wonder if an acrylic tank would put less strain on the floor than a glass tank.
 

MammaBearinTN

Fish Fanatic
Joined
Dec 30, 2020
Messages
140
Reaction score
78
Location
TN
All tanks should be rimless at that size. Just make it out of 6mm thick glass and your good to go.

It would appear the person who measured the glass, was thinking of using the glass on the outside of the base instead of on top of it. Someone wasn't thinking when they did that. And the silicon looks opaque/ white, which is normally an indication of old silicon.

How does the silicon feel?
Is it hard or firm but slightly squishy?

Take the tank outside and fill it up with water. Leave it for a week and see if it holds

I've never heard that. Why should tanks be rimless over a certain size?
Thanks.
 

justinhill

Fish Fanatic
Joined
Mar 14, 2021
Messages
89
Reaction score
34
Location
Surrey, UK
I just watched some guy give away 20g worth of busted 400 gallon reef tank (and protein skimmer taller than you) that just exploded. Then,you can watch an older vid of Lucas Bretz's 240 gallon glass tank- rupture.
Go acrylic on 100 gallons or more. They never leak and that more than makes for having the usual complaints of scratches. Even those can be buffed out one day. You can't even do that as a hobbyist for a glass tank with deep scratches.
My 240 is about 40 years old and it's been set up crooked and worse over the years- I once dropped it empty from knee high. Go acrylic.
Oh,and notice how many public aquaria go acrylic now. Even they are afraid of glass...even as just a front pane, let alone all glass.
And I imagine with acrylic it should be possible to put screws or pins into the joints to supplement the silicon.
 
Top