I scrubbed all the brown algae off. And I made a discovery! There are FOUR babies! They got very active after I cleaned and two were in one corner and another two were in a different corner.

The mesh top is on and it doesn't look so bad. I can still access the top easily by pulling up a corner. Now the snails can't escape. I've changed my mind about them again, well the way they look anyway. The sellers that had the sun spiked ones were in New Jersey and Florida... but the Florida ones were way expensive, and I thought New Jersey was too far away. I looked around at other nerite snails and found some tigers from Georgia for a reasonable price with free shipping

I bought a proper bucket and an acclimation drip. They'll be here Tuesday. Then I'll order more ghost shrimp.

The reason many pink and orange ponies get regrind is because the color red is the least stable. But LBS is right, it can happen to any color pony.

As far as yours goes, they look like transfer marks to me. Or maybe from ponywear.

That makes sense with the red color.
Thank you so much for your suggestion

Big Guns - Skid Row

regrind can happen to any color pony , it's how they mixed the vinyl pellets in the first place at the factory

But they were pink marks on a blue pony? Never saw that as regrind before

welcome to the arena!