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Four days is not too long, but it certainly requires some care. As with fish, many of the tropical will be sensitive to cold. If they are traveling with you in a car, just pay attention to bring their bucket inside with you promptly when you stop for the night and they should be fine...

At the risk of sounding rude, I think what is needed here is an attitude adjustment. Pond snails are at least as interesting to watch as most fish. I struggle to keep some around because most of my (native) fish eat them voraciously, but even in a heavily infested tank they are really fun to...

There's nothing wrong here. They like to suck on to glass. Couldn't say why, except to note that they have no idea it's transparent (from his up-close angle he would see a reflection of something distant within the tank).

Consider that the surface of the light itself will be the optimal location for algae growth.

That's Lucania goodei - I overrode the autocorrect three times while typing that post and it still came out wrong :(

It's only bad if you decide you hate it. I think a tank without algae looks like a house without furniture.

Check out the North American Native Fish Association for the best advice on this one. Chrysotus are wonderful aquarium fish. They are moderately aggressive feeders, but very peaceful toward tankmates. True to their name they will pretty much stay right at the top much of the time, leaving lots...

I'd recommend at that size. He is a very little baby right now.

I do use a lot of feeders and have no objection to feeding fish. I just wouldn't net them out of the pet store's feeder tank and put them in mine. Ich in every tank would be getting off lightly I think. That picture with the bloodworm really puts his size in perspective. It will be a few...

I guess there's not much for scale in your pictures, but at the size it looks like he is I doubt he could get a feeder fish in his mouth. Frozen foods are much more cost-effective and healthier anyway. I wouldn't ever feed a fish I like a feeder straight from the pet store :eek:

Next time you see him take a few minutes and really get familiar with what his eyes look like. Much of the time that's all you'll be able to find. It is really cool to see when they stick on the glass though.

It would be very difficult to drop sand through water at a high enough density to trap a fish, but if you had he was dead before you posted to ask about it. Their gills are on the top and bottom and can get held shut.

They don't bury deep, but they can change the color of their skin over a broad range like a chameleon (limited to browns and grays, but they can go the full range from white to cream to dark brown). Again, you may have a different species than I am talking about - you should ask that question...

Although nitrification can take place at a low pH, the initial establishment of the cycle will be inhibited. A low pH may be the problem here.

You're going to have to figure out what the species is to get a really optimal answer on that. Trinectes maculatus, the hogchoker sole, is commonly sold as "freshwater flounder" and will be fine for a year or more in straight fresh water, but there are other possibilities. Andy is quite correct...

That's a reasonable approach, among several that will work. The limiting factor here would be how elaborate the brackish setup is. If everything you need to keep wet fits in the 20 or the 25, go for it.

Is that an under-gravel filter? I didn't know anyone still did that. If yes, please disregard my advice about adding sand and use a container for it as just mentioned. Sand will not work with that filter, nor is changing the substrate in large chunks a good idea. I was assuming there was a...

Further information was provided by PM, and I must withdraw my earlier statement about pH. Figure out what it really is.

Thanks - told you I wasn't familiar with them :) I would not take brackish fish and put them in freshwater. Most can survive for an extended time, but it is stressful for them and the situation will already be stressful. Their organs have to work harder to eliminate water (picked up...

You're running canister filters on 20 gallon tanks? The fish that I'm familiar with there are all very peaceful. "Dragon fish" seems to be ambiguous, and I'm not familiar with the gobies, but my impression is that you could empty everything into the 55, move the smaller tanks and set them up...

Scott's advice is the 100% approach that I have used for cross-country moves. A two-day fast is absolutely not required for a journey as short as you are describing. Fish waste will not decompose into ammonia in that time. There's some in the urine and some passed out of the gills, but not...

Under optimal growth conditions a bacteria population can double every twenty minutes. Changing substrate is not going to harm your fish. When you establish a new tank you have like four individual bacteria and it takes them a long time to get to a population that can effectively control water...

Assuming at this range you will make multiple trips during the move, this shouldn't be a big deal. 5 gallon buckets with good lids are under $5 at Walmart or any hardware store. I have drilled the lids and run sponge filters off batteries, and had no issues with cross-country moves. For a 30...

Endlers are neat, but not locally available. I would use wild-caught Gambusia holbrooki before I shipped feeders. I might use some mollies too, although I'm a bit north of their range. They are commercially available though.

I wasn't familiar with the API pH kits - I've always used a meter myself when sufficiently curious. I rarely bother, as it just isn't a critical parameter in most cases. If you're breeding discus or neon tetras by all means test it twice daily, but I've been running seven tanks and haven't done...