Missing nerite snail. WWYD?

[Gypsum]

110L corner tank contains cherry barbs, green laser corys, one Bolivian ram, one clown pleco, two nerites. Nitrites/ates = 0. PH 6.8. Ammonia = maybe not as yellow in the test tube as I would like, but these colour gradations are vague. Really soft water because Scotland.

One of the nerites has been missing for about 48 hours. I'm paranoid because I lost two fish in a different tank due to a dead snail not being discovered for some time and the resultant ammonia spike. I've dug around the tank a bit and shown a headtorch around corners, but haven't unearthed every single thing, such as the plants and the large piece of spiderwood, due to the risks of stressing out the fish (more than they already were) and stirring up more bad sh*t, but no sign of the snail, dead or alive.

Then I did a 75% water change with Seachem Prime.

How much digging would you do for a missing snail?

 

[LordHappy]

Happy day...this may be an unpopular opinion that's scientifically wrong, but I'd not do any. You have a beautiful planted tank and it could be wedged into any of the fern roots or a crook in the wood. I have no clue what the ammonia spike might be in a 110L, but reasonably, as it rotted, the foot plate...no...the mantle cover...no...well, whatever that piece is that closes over the foot would loosen and the corys would nibble away at the flesh as it softened, and the clown pleco would get into the action as well. Even the ram would join in. Its kind of a buffet for opportunistic fish. I'd think that tearing up the tank would stir up all sorts of stuff, and doing big water changes causes a lot of stress, too.

Given the color chart, perhaps just monitor the ammonia and when it turns a definitive shade different, then start the hunt or, absent that, small and steady water changes. Do be sure to clean your arm if you're going to stick it all the way in to feel around for the decedent and be courteous to others by putting towels on floor because my wife will get really mad if even a single drip falls from your wrist or elbow. Using your t-shirt isn't an acceptable solution because it has to be washed. Which makes me wonder if the shirts I don't use to wrap my wet arm in are ever washed, but that's not important now.