HorizonTech Falcon Legend leaking advice

TL;DR: advice for Falcon Legend leaking problem and/or recommendations for no-leak sub-ohm tanks (bottom airflow)

I've just bought a HorizonTech Falcon Legend tank and I've been having massive leaking when refilling with eliquid, what am I doing wrong?!

I'm ok with the occasional leaking, but as an all day chain vaper (bad, I know!), that means constant refills and spills - not just 'wet' or even 'a drop', I'm talking running down the entire mod leakage!

I've been with Tobeco Super Tank Mini with Tobeco 0.5 Ohm coils for years - great flavour, super sturdy, foolproof, leak proof (other than the common airplane and hot day MINIMAL leaking).

After many happy years, one of my tanks' 510 connection broke off :( I have another and can still buy the original coils, but it seems the tanks went out of production as I can no longer find them anywhere - last I bought was in 2017 - that's to attest to their built quality and longevity!

Now, I can vouch the Falcon Legend is great (even better than Tobeco) for flavour, had no spit back or gurgling so far, no dry hits, but it's only been a couple of days. Still to find out if the M8 coils will last as long as advertised, the only drawback with the Super Tank Mini is that coils last me about a week give it or take (I can stretch them to about 10-12 days, but then the flavour is muted and I can get a bit of a burnt taste from time to time).

70/30 VG eliquid @ 50 Watts on Super Tank Mini / 65 Watts on Falcon Legend, I didn't notice a massive difference in battery longevity comparing the two, even at the higher wattage.

Mod is an Eleaf Pico Plus bought just to accommodate the bigger HorizonTech tank (25 mm vs 22 mm for Tobeco). I just love the Pico small footprint, have been a fan for a long time as well, super sturdy and no-fuss little mod they are!

Can anyone please help with some advice for the Falcon Legend, and/or perhaps recommend tanks (bottom airflow preferred) that don't suffer with this problem?

Thanks!
 

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Have you tried replacing the o ring where it's leaking from?
So, I ran some troubleshooting: without changing the coil I opened up the base and checked it. I thought the coil pin was a bit loose, but it seemed to be the same tightness as in the spare M6 coil that came in the box. Checked the glass and airflow o-rings and reassembled to refill - no leaking while pushing the eliquid, it happens when I reattach the top filling cap!

I thought I wasn't filling it to the max of the tank, but next I tried filling a bit less - below the bump on the bubble glass - and the leaking diminished a bit. This sucks, as you can't really use the full capacity of the tank - not a problem at all with my old Tobeco!

What else do you think I can try, other than swapping coils? Could it be the eliquid somehow?
 
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englishmick

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I have some old Lemo tanks. It's hard work to stop them leaking. They don't resemble your tank but maybe they have some leaks in common.

Firstly they leak bad if you fill them all the way. You have to leave quite a bit of space. You said this happens to you.

Lemos fill from the bottom through a small fill hole. I found if I fill them quickly with a dripper they leak, I pump the juice in slowly and that helps. Probably not relevant to you though.

They leak like crazy if the wick isn't bulky enough, but you don't make your own coils and wicks, I think.

I found is that if the power is set too low they leak. You have to burn off all the juice that makes it to the coil. But then maybe you are raising the power to compensate for some other problem. The power level is definitely a thing with my brand new Kayfun 5 which is a top fill tank.

Gaskets are annoying. I had one Lemo that leaked whatever I tried. Checked the gaskets and they all looked fine. In the end I replaced them all and it stopped leaking. It's a pain to have to replace all the seals knowing it's probably just one that has a problem.

High VG juice will definitely leak less than high PG juice.

Maybe some of that will be helpful.
 
Thanks for stopping by and for the tips, it reminded me of when I got into building coils for some clearos and my square "pen vape" device, and then onto the very first tanks... I made a mess of trying to improve ejuices back in the day, without any knowledge - just bought some pg based food flavouring and added to pre-made cheap ejuices! No wonder they leaked all over, made me give up vaping for a while! I don't think DIY even existed back then! lol
 
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