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  1. Donya

    Eel in freshwater tank

    Hmm well, from a bit of quick reading it sounds like "freshwater morays" are actually more brackish to marine and don't live in full fw their whole lives. So the common name is perhaps a bit misleading.
  2. Donya

    Eel in freshwater tank

    There is a species called the freshwater moray, although I know nothing about them beyond that they exist. I assume that's what is in the video if it's in fw. Other moray species are strictly saltwater and should be kept at full marine salinity.
  3. Donya

    Which type of snail?

    Ornamental snails with thicker shells like apple snails and Nerites need a higher pH >7.0 or the shell will be damaged at an increased rate. Too long in acidic water and they will get pinholes in the shell and will have difficulty calcifying the area to repair it. The smaller Planorbid ramshorn...
  4. Donya

    Aquatic Fertilizer and Snails

    Also worth noting that toxicity of copper to inverts (snails included) depends on pH. Low pH increases toxicity while high pH decreases it (ornamental snail species need >7 to avoid shell erosion). 0.0001% sounds small but the conversion to ppm is x10,000, so 0.0001x10,000=1ppm. Now, of course...
  5. Donya

    Aquatic Fertilizer and Snails

    Depends on the amount of copper sulfate -and possibly also on whether it could build up over time if used a lot. Copper can be used to eliminate snails from a tank in high enough concentrations. Does it give any kind of measure or percentage associated with that ingredient or is it just in a...
  6. Donya

    Blue legged hermit crab...multiplied?!

    If both shells have crabs and you only got 2, the mystery "crab" is a shed skin from one crab, which gets cast away and will blow about in the water since it's hollow. You can remove it or leave it in for them or other clean-up animals to eat. I don't see anything abnormal looking that would...
  7. Donya

    Crayfish/lobster type that doesn't need shallow water?

    I may have found the origin of this weird 6" water depth thing; first result google searching crayfish water depth unfortunately. It's just straight up not true based on quite a lot of experience I have keeping various crustaceans at various depths and finding them in the wild, but this 6" thing...
  8. Donya

    Setting up a salt water tank

    First place to start is tank size and general stocking category. That will dictate a lot. A 100gal sw tank is a very different beast than a 20gal, and fish-only is pretty different from reef. So how big will the sw tank be and reef or not? It's usually best to start with the biggest volume you...
  9. Donya

    What is this crab?

    Green crabs are pretty much hard as nails compared to many other Crustaceans from the tropical hobby. Their hardiness makes them a real pest where they are invasive. They live coastally here and get into lower salinity estuaries and tidepools and such, which means they can survive some really...
  10. Donya

    What is this crab?

    Ah yep, that will be the source then and it will be a green crab. There may be other native surprises that show up over time too.
  11. Donya

    What is this crab?

    Actually just realized I can see claw profile from the reflection - ha! Looks like that 3rd category which adds weight to the green crab guess, also given it has 5 points each side of the right shape which is characteristic. Color is highly variable in the species and they are mean little...
  12. Donya

    What is this crab?

    Keep him out of the tank! He can live in a bucket for a day. At a glance my first thought was european green crab but I really need to see the claws to be sure of that without turning to books to remind myself of some of the key features. For claws, it's specifically the shape of the ends side...
  13. Donya

    Prime Seachem - does it doesn't it work

    Haven't used it personally but looks like it's still on Amazon? There's also Purigen which I have used - expensive, though can supposedly be "recharged" with bleach (which would then have to be detoxified from the media with something else). Never tried that since I really hate working with bleach.
  14. Donya

    Prime Seachem - does it doesn't it work

    OP can correct me if I'm wrong, but I think what's in question here is not whether to use it as a regular regime dosing to a healthy, cycled tank but rather what can be used when something goes wrong in a sw tank and the cycle/filtration/LR isn't keeping up when there is little/no spare water...
  15. Donya

    Prime Seachem - does it doesn't it work

    Yes. Prime was an essential tool I've used in moving the contents of two 20gal marine tanks in a multi-day drive with everyone in coolers and then having to wait several days after that with everything for the tanks to be set up again with no RO unit hooked up yet (and thus minimal access to new...
  16. Donya

    New Shrimp in New Tank!

    I've never heard of such a thing and would never use it if it existed. An active, roaming shrimp that also eats is a healthy shrimp exploring its environment. Please don't try to "calm" them - just let them do their thing and settle in.
  17. Donya

    BIG MISTAKE.

    That's why I qualified my statement with "perhaps with the exception of basic cyanoacrylate super glue." However, I would not go as far as to simply say "it's safe" because there are multiple factors in what "safe" means from a reef standpoint, not just the chemicals themselves. Frequently...
  18. Donya

    Two Assassin Snails and a Nerite (20G)

    The assassin shouldn't have a strong grip; just grab it and scoot it gently around on the glass a bit if it doesn't let go right away. If the foot is visible, apply pressure to the sides of the foot gently and it should lose its grip pretty fast. Nerites are tougher but same general strategy...
  19. Donya

    Two Assassin Snails and a Nerite (20G)

    Never had assassin snails myself but have heard of them going after nerites. Whenever you have a predator and a prey animal together it's always a game of chance even if the predator is well fed; there are never any guarantees on what the predator species will or will not do. I would recommend...
  20. Donya

    BIG MISTAKE.

    The ammonia and such is most likely from dieoff in response to the toxin since you had animals in there that died. A lot of small organisms may have died too, like plankton, which can cause readings pretty fast upon death. The toxin may have not nuked all the beneficial bacteria though, perhaps...

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