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I'm looking for a new glass in tank diffuser. Nothing much wrong with my current one, other than the bubbles appear a little large now it's been going a while. Use of co2 isn't really an issue as I have a 6kg cylinder which lasts over a year & costs pennys to refill, so I've no concern...

Fleabay?.... http://www.ebay.co.uk/sch/i.html?_sacat ... +regulator From Hong Kong though.

Which I now have! And I'm very happy with it.

I have the bottom one, but the previous model (A-164) which is exactly the same except you need an alan key to adjust the pressure, rather than having a nice knob! Has been great so far - over 6 months. The needle is a little sensitive when adjusting, but that's nothing major.

I concur. It took me a week of fiddling with the reg to get it sorted. I never touch it now, other than when I change the cylinder, which at 6kg, isn't very often. I did have a bit of an outbreak of algae shortly after adding presurised CO2, but once the CO2 settled and after a few weeks of...

No - it's all about providing enough flow and directing it appropriately.

JBL kits are good - m602 - but at around £250, it's a lot. Best to shop around & get all the bits seperately. It's very improtant to get a good regulator & solenoid.

Budget bottled gas ltd, Forth Street Liverpool, Merseyside L20 8JW. If anyone in Liverpool is looking - £15 for a 6kg cylinder & £6 to refill!

Tried that, but it left the bottom left of the tank dead. The LHS powerhead is positioned just below the spraybar, angled towards the rear, so pushes water along the back of the tank, to the right. The spraybar flow goes over the powerhead, so I still get good flow from it towards the front...

Thanks susssex! It's been a few days now & the pressure seems to be stable now it's set at 2 bar, bubble counter stable, drop checker going green - all good :thumbup: Got to start dealing with the algae now!

[/url] Uploaded with ImageShack.us[/img] pic of set up for comment.

You're asking me to mess around with the needle when I'm trying to get it stable!!! :lol: Will do - I had it steady a 2bps when first set up. Then steady at 3bps when drop checker wasn't changing, then 4 & then 5, so from my limited experience, I'm guessing it's pretty stable. It stayed at...

I set the pressure to 2 bar (2 kg/cm3) last night - crazy amount of gas, so adjusted the needle. Somewhere between 5 & 10 bps, but the dropchecker went green so all fine. Will see what happens today when I get in from work......

The solenoid is plugged into a digital timer? I assume you mean turn the working pressure on the reg up to 2bar - I take it that is the same as 2kg/cm3? - I'll do that & see. I may be going for an inline diffuser, so guess I'll need to increase to at least that anyway. I seem to remember re...

I'm not up to speed with the pressure things yet, but the set up is as follows: Yes - it is that one! except it is the A164 model - the same but has a key rather than a knob to change the pressure. The cylinder pressure is at 1000psi / 70 kg/cm3. The working pressure I set at 15psi / 1kg/cm3...

I can get another valve so will try that. Not too knowledgable about regs & I can't quite remember the guage readings so will check tonight but the cylinder one doesn't move and currently at around 70? The working pressure one I set at around 15psi, but it drops overnight to 5-10, then starts...

Set up goes: cylinder, reg & solenoid, 1m tube, valve, 1m tube, bubble counter, 50cm tube (into tank), diffuser.

Cheers guys, I'm playing around with spraybar position, diffuser options & increased bubble rate & I've noticed the dro-pchecker going green so I'm getting there with that one. Anyone have any advice re question 2 - the reg pressure reducing over night?

I'll sort a recent pic, but one soon after set up is seen on thread - about 6 months ago: 37x 17 x 18 custom built. spray bar now along back. now has 2x tunze 6015 powerheads (1800lph each) & more fish.

I've just got this for Xmas, so would like to try & get it sorted with what I've got, if you know what I mean!. I did look at the inline diffusers, but opted againt as it reduced flow & wasn't keen on the "mist" look. Surface turbulance has been reduced by lowering spraybar - surface ripples...

6kg co2 cylinder UP adjustable pressure reg + solenoid on digital timer co2 tubing glass check valve Fluval bubble counter Gush glass diffuser glass drop checker with bromo 4dkh water (from Aquaessential)

A couple of CO2 questions: Full set up with ceamic diffuser bottom left under powerhead & spraybar. Drop checker other side of tank reasonably high. On 1.5 hours before lights, off 1hr before lights. Tiny bubbles everywhere whilst on. 186ltr (150 water) 1 - even at 5bps, the drop checker...

Cheers Alastair - looks like I'm all set up - nice steam of tiny bubbles everywhere running at 2 bps. Regulator seems to be working well :wink: Bit of tinkering over the next few days prob, but so far so good :D

I'm about to set up my co2 system. I have a 6kg cylinder & an up 2 guage regulator. I'm looking for a little help to get going - when it's all set up, do I "open" the cyclinder fully?

That's what I thought. Just checking! Cheers

Another CO2 newbie question! What liquid goes in the bubble counter?

I've just got one of these: http://www.aquaessentials.co.uk/ae-desi ... -1757.html Dumb question I assume, but when placing in line, which way round does it go?

A possible snag..... The UP inline diffuser is for 16/22mm tubing. I'm pretty sure my tubing is 20mm diameter (external). Does anyone know if the UP will fit my tubing?

OK - looks like the Up inline diffuser then......

I'm currently setting up pressurised CO2. Looking at diffusers, I was going to get a glass one with ceramic ring, but am reading that inline diffusers are the way to go? Is that the recommendation? Tank holds 150ltr water, 1400lph external & 2x 1800lph powerheads.

Cheers Alastair. I could be interested in yours. The one on ebay is the A165 - any idea what the difference from the A164 to the A165 is?

OK. I'm down to 2 I think! Money isn't too much of an issue, but as this is my first forray into CO2, I'd rather not spend huge amounts on stuff I don't understand very well! (yet). I'm looking for adjustable pressure. It will be hooked up to a UK refillable CO2 cylinder (not FE) & a glass...

Can I have some advise please - I'm now thinking getting seperate pieces, but am struggling with the world of regulators! I was thinking of the jbl regulator & jbl solenoid, but that comes to around £160. But I've seen combined regulators & solenoids on ebay for around £50..... Can someone...

I would like to buy an off the shelf pressurized CO2 system which can be upgraded in future. I've been looking at getting the JLB ProFlora m602 system. Can anyone provide a review? or suggest an alternative make?