<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hank,</div><div id="AppleMailSignature">I haven't dived much in lakes; but a couple of years ago I was scuba diving in a </div><div id="AppleMailSignature">90 ft deep quarry, & hit a thermocline at about 30ft. I couldn't see my hand in </div><div id="AppleMailSignature">front of my face. I saw a dark line rise up my mask as I descended into it. </div><div id="AppleMailSignature">Some sort of algal bloom!</div><div id="AppleMailSignature">Can it clear up deeper down if you persevere through it?</div><div id="AppleMailSignature">Alan</div><div id="AppleMailSignature"><br>Sent from my iPad</div><div><br>On 11/09/2017, at 8:48 AM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>Today I went to my favourite lake for a dive, I motored out to 100 feet depth and sank. The visibility was so bad, I could not see 2 feet. I couldn't even see my compass in front of the dome. I just surfaced and went home ;-( </div><div>Hank</div></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Personal_Submersibles mailing list</span><br><span><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br></div></blockquote></body></html>