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After you download the image, you can choose to display them within the message (where the cursor is positioned so it is a good idea to click <Enter> after text). You can embed thumbnails or the full original. I recommend thumbnails for photos and full images for very small graphics for the best viewing.
I editted the above post so you can see how the thumbnail and the full image embed look. Even if you do not embed, viewers can click the tiny image to see all images in the thread in a slide show (also true with embedding the thumbnails) so all is not lost but the journal presents better with the embedded images.
Nitrates are not a huge problem (except at very high levels - yours were high), ammonia and nitrites are at any detectable level.
Are you using ocean water or synthetic? If synthetic, are you mixing with tap water or distilled or RO/DI?Most of us use synthetic with RO/DI water (water that has been filtered for both chemicals and minerals). Tap water often contains chlorine as well as traces of metals that are harmful. The RO/DI (reverse osmosis/ deionize) process removes these dangers. Seawater can carry its own problems if collected near shore, depending on the pollution of the area.
This was before I left for work today. Sorry for the crappy photo. Seven was plastered on the glass half out of water (within reaching distance!) and I took that as an opportunity to see if I could touch him. I touched an arm, and he tried to pull my finger/s towards him. Pulled until the corner of the tank, and until my finger was a little too near his mouth that I was comfortable with, so I had to pull my hand back (took a while- not as easy as I thought it would be!).
He decided to go to the Lego after our hand pulling. Allowed me to pet his head/mantle twice, then hid his mantle inside the Lego and hugged it (inverted hug? with his mantle inside and his mouth outside). I took that as a sign of "do not disturb!"
Prior to this, I was only able to "pet" him once sometime two weeks ago (before he went into hiding), and it was more an accident than anything else. I put my hand in when he was swimming, and passed my hand a couple of times and allowed me to move my hand around him.
I don't know how stressful this morning's attempt at petting him was. I don't want to add to his stress, but he's always seemed to tolerate me, and sees me as that annoying being who likes to disturb him.
Each animal is different about being "petted". I have had some that were extremely interactive and came to be touched on a regular basis and others that never allowed contact. I have a totally anecdotal thought that, as they age, their skin "itches" and a hand/finger makes a great, soft scratching post. Age is not the only time they will decide to make contact though. Coming soon to a journal near you is a great video of an octopus using a keepers hand to groom (removing dead sucker skin). When @haggs gets around to making a post, I'll add a link .
LOL, @haggs, YOU could have left the link to that great video but at least you stayed up extra to get it posted to TONMO. It appears we make a great scratching post. One of my less social O. briareus would use the Koralia to assist in removing the dead cuticle.
Speaking of octopuses coming out of the water, this news post shows a GPO crawling on land. Where O. rubescens has been spotted climbing out on land to snatch a crab outside a tidepool, it is not common for GPOs to be seen out of the water except during senescence.