how to drape a plant for sea horse?

getting some horses and wanted to get some live plants in there for them to latch onto. my problum is i have some thinline hermits, they should have named them backhoe hermits ;D. my biggest one is easly 3 inch now, they are the friendly, dont ever see them fight or attack anything unless its dead. so im not worried about the horses and them but as i was saying the hermits start to bury themselves at night and they do seem to love to use the fake plants i have. they either rip them up or dig them out. then they float, so of course they spin around in the tank even with the slow flow and that may hit into the horses. my soultion i was thinking about has hanging or draping some plants from above down into the water using a thin plastic (pcv pipe). my new tought however is how do i get them to not float up to the surface (the plant). my first thought was some really small fishing sinkers but i dont know what effect they would have on the long term water chemstry in the tank. i do know for years now here in NY lead sinkers cannot be used for fishing, so the sports store would have the newwer kind but dont know what there made of. you see fresh water plants have the metal clasps to hold them toghter, id like to know what happens in saltwater.

whats your ideas besides a sinker to weigh the plants down. not planting a plant in this tank, the thinlines destroy anything plant like (algea/plants) have gone throw many different plants looking for one they dont like. i did buy some red mangroves and there thick enough that they cant pinch them, but planting them made them underwater wich of course you cant. whats a good plant (vine like) that would work good, or another really thick plant that i could plant that can be underater. thanks

 

Well, I can't help too much as I don't use live plants in any of my seahorse tanks.
My plastic hitches either come with weighted material (like a ceramic) or I use a piece of live rock rubble to keep them in place.
As for the crabs, I wouldn't trust them myself, especially at that size.
You may find that the crabs could become food for thought for the seahorses.
My reidis tore apart my cleaner shrimp I put in the tank when I first started into seahorse keeping so I've never put anything else in to tempt them.
I certainly wouldn't use any sinkers in my tanks, even if they are not lead.
About the only metal I've ever used in my tanks is in the form of magnets re power head impellers.
What do you mean by "the thinlines destroy anything plant like "?
What size is the tank and do you have anything in it that will be there with the seahorses?

 

ceramic and or magnets? i like the ceramic idea but how to attach that wouldnt be very visabul?
they tear apart plants and try to eat them. shaving brsh was the worst plant, there claws acted like sicsors and mowed it down within 10 min. all i had left was a bulb in the sand . plant after plant i try- it dont matter if its a plant they rip it up, if it moves (fish snails urchins shrimp) they leave alone. they really like there greens.

 

Well I guess you have a choice to make, either keep the crabs or get rid of them and get plants.
With live rock rubble I just drill a hole in a little piece and glue the plastic plant into it. For live plants, you could use thread or fishing line maybe to hole it until plant roots take over the job.