Any ideas, I was thinking along the lines of dwarf puffers, but i'm up for any ideas!
Not to expensive but still something interesting.
Iv been cycling it for over a month now!

Go wild!

120 liters should have about 26 gallons or so if i calculated correctly. if you're going for dwarf puffers, you can house quite a number but there's always always the aggression issue. there's a male:female ratio i think which i can't remember at the moment

apart from that you're open to many choices actually. small shoals of community fishes would do fine in there.

Could do a community set up or a Brackish Figure 8 set up

Is brakish difficult to keep, havn't had any experience in that department!

Cheers for ideas so far!

Ive got a Rekord 120 brackish set up with green spotted puffers. Brackish is no harder than tropical, you just literally add a few spoons of salt. I use AquaTonic Salt, and add 1 tablespoon for every 10-12 litres. So when you do a water change (10%), just add another tablespoon of salt, and thats it! Obv watch for salt creep when the water evaporates and so increases the salt level, but a cheap hydrometer from your LFS will do the trick. Easy!!

Just read a bit about Green spotted puffers they are very cute but grow to 6". How many do you have in the tank and what tank mates do you have with them?

Thanks for the info about the salt levels. I'm temped to give it a go!

I think green spotted puffers require higher end brackish, If you want a easier level to keep you could go with figure 8 puffers as they get relativley smaller and require a lower SG rating (check the avatar for what they look like!! (not my fish btw))

Ive got 2 in there with 2 green scats and a red clawed crab. A lot of people will say the tank is too small for the puffers, but I did about a month of endless research about them, and everyone had a different opinion. Of my 4 LFS, I was told they would grow between 1.5inches and 10 inches! The internet is the same, you will find loads of random figures. So I kinda settled on an average and guessed they would grow to 4ish inches. Anyhow, its like asking how big a human is, we all vary! But honestly please dont be put off brackish, its so easy and nice having something a bit different.

Ok, I'm very temped but I will have to do some more research and stuff.
Do you mind if I ask you how much you paid for your G.S puffer, as i'm still at school and only have a saturday job.
Like i say, I am really interested in this fish and I know nobody who keeps them.

Cheers for the help!

Yeah, I paid £6.99 each for them which I think is a bargain! I didn't know anyone who keeps them either. They are sooo cute!

Wow, thats a really good price. I thought they'd be at least £20.

They are £6 at Dobbis Blackpool

I've also got a 125L tank that has been a community set up for over a year now. I plan on rehoming all the fish and changing the substrate over to gravel.

I'd love to get some puffers and have just started doing my research. How many GS or F8 puffers do you think I should stock?

GSP's are a great fish
As has been mentioned previously, if your worried about brackish go for Fig 8's first, as they require low-end brackish water of a salinity around 1.005, whereas GSP's need to go up and up, eventually getting to full marine; which is another problem if your worried about that sorta maintenance.
Ive kept both before and Fig 8's are alot more peaceful, so you'd be able to have some bumblebee gobies with them defo; whereas GSP's can be 50/50...my one who i had for a year or two was kept with 2 columbian cat sharks, mollies and a breeding trio of knight gobies, but then the whole stock of that tank died as my cousin turnt the power off I have another GSP now and he seems content too, so when i get him properly settled in ill be getting another pair of cat sharks.
YOu could also go for South American Leaf Fish, but feeding these guys can be a pain. Alternatively there are snakheads such as Channa Bleheri...you may get away with having a group of these in your tank. They are a great preadatory fish and you dont have to fiddle about with salt either

Would you recommend a pair of figure 8 puffers?

Actually Aquatonic salt is not the right salt! It is for freshwater tanks. You need salt that is used in marine tanks. Your tank would be ok for figure eights but GSPs need a salinity around 1.008 at least as they mature. If you have more than one in 120 liters they will get agressive real quik. At six inches they will get really cramped.

I have a tank with a pair of F8s and bumblebee gobies in and I also have a tank with Dwarf Puffers too. In the whole, the DPs are easier to maintain being freshwater fish, but the F8s are wonderful fish too. I would be torn between which ones to lose if I ever had that situation arise, but freshwater fish are always easier to look after.

With any puffers you have, you will have to over filtrate the tank and do weekly 50% water changes without fail. They require perfect water conditions to thrive. They need plenty of space and should ideally be kept in a species only situation (with any F8 or DP you're taking a risk adding BBGs to the F8 tanks and otocinclus to the DP tanks), but these two puffers will possibly tolerate the mentioned tankmates if the tank is well planted with lots to break up lines of sight and places for the BBGs to hide in.

If you have any questions about my fish/setups feel free to pm me

Ah Jenny, nice to see you again. We both often stare at the tank in Charring X Hospital! I think we're chatted about it a while back.

Well here's my plan. I've got a 3ft tank that I'm going to switch to sand substrate in the next month or two. Once the tank has settled again I'm going to rehome the community fish in there. Then I'l going to do a little redecorating and keep it simple....some bogwood and plenty of planted Vallis. Hopefully this will give a lovely effect something like sea kelp (ie lots of vertical plants).

Whilst all this is going on I'm going to switch the tank over to brackish. Once all the tests come back happy then I'll be on the hunt for a nice pair of F8 puffers.

How does that sound to everyone?

Good Just remember to gradually increase the salinity by 1.002 each week...dont wanna kill all of your bacteria