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Alexander Spring (Altoona) - no diveable cave or really cavern Blue Grotto (Williston) - cavern Blue Spring (Orange City) - cavern Bozel Spring (Marianna) - difficult to get to, need boat Buford Spring (Weekie Wachee) - cavern, deep Cypress Spring (Vernon) - no cave, small cavern, difficult to...

Just an update to this post. I originally requested a replacement Intro to Cave NACD card in July of 2019 and finally received it in February 2022, one year and seven months later. Happy to receive it and glad that NACD finally came through, but it was a hell of a long time to wait.

Pretty cave! Wish it was open to diving.

What are people's thoughts on using a Dive Rite CX2 light as a hand mounted primary for those getting started? Looks like a pretty sweet light, 1700 lumens at an 8degree beam with a 2.75 hour run time. I've never used one of course.

Is there anything that I can do to reduce the production of mucus or congestion during the dive or help it drain more effectively to the throat? It feels like a bunch of flem and mucus is just sitting there in my nasal cavity and eventually blocks the eustachian tube from opening. When I get...

@doctormike the idea was more to reduce the amount of congestion that I'm having with the thought that the congestion created during the dive is blocking the openning of the eustachian tube and preventing equalization. Not sure if that actually makes sense though... Appreciate your reply all...

Update: Eustachian Tube Balloon Dilation did not relieve my issues of not being able to clear mid-dive (30-40 minutes in usually) with issues often when I come up to a much shallower depth and then try to go back down, which is when I'm not able to clear. Exploring turbinate reduction surgery...

The doctors at this practice typically do it under local anesthesia and mentioned if they do a good job at blocking a specific nerve then there's usually not much pain. Unfortunately for me, I thought the pain was more like a 5 or 6 on a scale of 1 to 10. However the procedure is only 2 minutes...

I went ahead and had this procedure done yesterday. It was a little painful - done under local anesthetic - but I got through it. Out of the water for six weeks. I'm a little worried about patulous eustachian tube (always open) which is supposed to be really bothersome, but I'm told it's very...

I row (crew) two to three days a week for a couple hours each day, which keeps me pretty healthy. Will also trail run, bike, and paddleboard a bit every once in awhile.

Yeah, the CDF site has been messed up for awhile, so good luck. I get the compressed text on my phone but was somehow able to change a setting and get it to pull up on my computer. Tom Johnson is the owner of the site. Honestly there's not much on the CDF forum anymore that's all that...

Mods, can you move this thread to the main Diving Physics, Physiology, and Medicine forum? Meant to post it there originally

Hi all, I have always had a bit of difficulty with equalizing my left ear, which often occurs in the middle of a dive. I also cave dive which as you can imagine is sometimes a problem, as ascending is not always an option as you are at the mercy of the contours of the cave and have to descend...

I don't really see the need for one. I dive the Katana 2

There's not really a situation that I can think of where I would recommend trying to add some sort of buoyant material so that you can then add ditchable weight. Essentially you're trying to go from being negative, to being positive, to then adding ditchable weight to be slightly negative again...

In the English language, separate paragraphs typically contain related but unique thoughts. In this short paragraph, you essentially said if you are correctly weighted it is ok ("at worst") to be neutral at the surface at the beginning of the dive at which point you WILL be positively buoyant...

A balanced rig is when you are neutral or slightly negative at the end of the dive and can reasonably swim your rig up. If you're too negative then it means having redundant buoyancy (drysuit, dual chamber wing, perhaps a lift bag, etc.). A balanced rig does not mean being positively buoyant.

I never want to be positive at the end of the dive. If you're positive you're not properly weighted, you can't hold a safety stop or deco stop, and that's dangerous. Not a fan of the obsession some get (not accusing you necessarily) within the dive industry of using as little weight as...

Last I heard as of Monday, only Troy and maybe Madison is under, Little River and Peacock are fine. Supposedly water levels are dropping upstream, so I'd imagine things will clear out. No guarantees a few weeks from now though.

I have to angle my regs a bit as well when using Luxfer AL80s with the transmitters facing down. No issues with my LP108s. I do have a weird Coyne LP95 that has a short neck that I have to angle my regs a little bit as well, but it's a boat anchor, so probably wouldn't ever try to sidemount it...