May 3, 2022 at 4:48 pm #76162loganParticipant
I recently ordered 15 Nassarius snails to put in my 30 gallon seahorse tank as I’ve read it helps immensely with leftover waste. However, when I received the snails the seller sent me the incorrect amount of 150 instead of 15. After acclimating them I found that about 120 survived shipping. I wanted to get some from my local store, but for some reason their supplier has been out for the last month so I had to get some shipped.
Basically, I now have a ton of snails in my 30 gallon tank with my seahorses, and I want to be sure that is okay and not something that can harm the ponies. I haven’t noticed any adverse change in their behavior or with the parameters in the tank so I think I’m fine, but I wanted to ask here to be sure as I cannot find any information on this specific question online.
As a follow up, if there is some danger with me keeping this many snails in the tank, how would I maintain a separate habitat for the snails I need to remove? Thanks in advance for any help, it is much appreciated.May 4, 2022 at 12:59 pm #76200Pete GiwojnaModerator
Yes, sir, 120 Nassarius snails are WAY too many for a 30-gallon aquarium. That’s a lot of biomass to add to a relatively small aquarium at one time, so you will need to be alert to the danger of a potential spite in the ammonia or nitrite levels in the tank. That’s the immediate danger…
The second thing to beware of is that Nassarius snails are not grazers that feed on algae, but rather, they are meat eaters that will clean up leftover frozen Mysis. But there will not be enough leftover frozen Mysis from the ponies in a 30-gallon setup at mealtime to sustain 120 Nassarius snails, so there is a danger that they will begin dying off due to starvation.
Of course, you could attempt to compensate by feeding additional frozen Mysis just for the snails once the seahorses have had their fill, but all of that extra frozen Mysis would again increase the risk of a dangerous spike in the ammonia or nitrate levels following a heavy feeding. So it’s going to be very tricky for you to keep all 120 snails adequately fed without overdoing it and triggering a spike in nitrogenous wastes. That would be a delicate balance to try to maintain for any significant period.
In short, Logan, you don’t want to maintain more than 10-12 Nassarius snails in your 30-gallon seahorse tank for any length of time, so you should make plans to re-home 100+ Nassarius snails as soon as possible. Perhaps your local fish store would be happy to take the surplus off your hands since their regular supplier has not been able to get Nassarius for them recently.
If not, you may have friends with saltwater aquariums who would love to get some free Nassarius snails, so maybe you can disperse many of them to your fellow hobbyists.
Otherwise, you’ll have to set up some sort of additional aquarium to house the excess Nassarius so that they don’t become a potential risk to your seahorses in the 30 gallon setup. Nassarius snails like to bury in the sand, so this extra tank should have an inch or two of fine sand (preferably live sand, in my opinion) that they can burrow into; and this new tank will also need to have an efficient biofilter to sustain that many snails indefinitely. You can just feed the snail tank with a decent amount of frozen Mysis daily, and hopefully everything will go smoothly.
Pete Giwojna, Ocean Rider Tech SupportMay 5, 2022 at 3:46 am #76209loganParticipant
Thank you very much Pete for your answer. I will separate the snails in a smaller tank I have and will call my local fish store to see if they can take the excess snails. I appreciate your time as this is a new journey for me and am still learning.
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