Buying a marine aquarium

Sk8r

Staff member
RC Mod
...most fish stores cannot stock the size of tank appropriate for most of the fish they sell. Tanks of 30 gallons or under are appropriate for a clown pair, a few gobies or blennies, a royal gramma or dartfish, and some inverts. And with good lighting---corals.

If you want larger fish, you have several size jumps. A 50 will let you have a dwarf angel or similar, anything a 30 can handle, maybe a single chromis (a damsel, like a clown, mildmannered, in the singular.)

A 75 will let you have a few more fish or a larger reef.

A 100 is a pretty good size tank: the smallest, quietest tangs, and some multiples: I keep my own as a damsel tank---they're quite trouble-free in a 100 gal, with one of a kind. Plus some gobies, etc.

A 120-150 will let you have pretty good freedom to stock, but lighting one of these for a heavy coral load can get spendy.

A 200 up is getting into serious size, and keepers of tangs and regular angels are advised to go as large as possible and as long as possible. This sort of tank can provide various 'territories' along its length, and provide interesting viewing from several vantages along the way. This size is on the one hand far more stable and trouble-free than a little tank---but water changes are heavy-duty work, and automation of many things like dosing are a big help.

If you contemplate getting into the larger tanks, sometimes you can luck into a tank being sold by somebody either upsizing or getting out of the hobby: be sure when you are handed a list of what it's got---that it's appropriate for what you want to keep: size isn't the whole story. Shape matters, and whether the equipment is decades old.

If you want to order a tank, don't go it alone: ask around, get specs, get advice about brands and experiences...you can start out with a little tank to see if you like the hobby; but when you're ready to go large, shop around. And shop some more. Don't assume it all works: if somebody's leaving the hobby, there may be a reason somewhere in the setup. Your lfs may have a good offer, or used stuff; and a good lfs can be helpful---but still ask around.


We on RC are real happy to hand out advice. Sometimes it's pretty varied. But get us information about what you want to do and what you think you can do it in, and we'll be happy to help.
 
Thanks for posting this up. I've had my eye on a DSA 110. It's 60x20x21 with a center overflow. I've had freshwater setups when I was younger but now want to do a reef tank. My local LFS has some DSA tanks left and they carry the Marineland brand as well. I like the dimensions on the DSA tanks better. I want to try some corals and have more then 2 or three fish. I figured I would buy a few items a month and take my time buying the right stuff from the start.
 
Lighting will be big concern if you want corals: be sure your lights are rated for the depth you need and the type of coral you want. The dimensions sound good for a nice, moderate-size tank with enough room for a small-fish population that can be nicely lively.
 
I'm considering upgrading the 100 to 500.. trying to figure out the extra cost, beside the huge initial set up cost..

-my current tank temp swings between 79 - 81.5 without chiller. Will a large tank be more stable or will it swing just as much? (trying to avoid using chiller)

-as for Alk, Calc and Mag.. if I stock my tank in similar ratio as my 100gal, does this mean I will need 5x more 2 parts? or will consumption be less somehow?? i'm pretty sure the answer is 5x more ingredients

-any other hidden costs of a much larger tank???

thanks
 
One cheap supplement is Mrs Wages' Pickling Lime. Dump that into a 32 gallon Rubbermaid Brute, lidded, use it as your topoff, and it'll go months for a 100 gallon tank--5.00 for the bag.

A 500 is quite a monster, but should let you keep most anything. It will be that much more stable, and if you've got a basement, putting the sump below stairs might be able to save a chiller-setup, just because it's cool down there.

Big cost is lighting. Start curing your own rock, holey limestone, and be prepared to use a lot of gfo media changes to get the phosphate out. Bigger pump, more electricity. I use an Iwaki 100 belowstairs with a 100 g, and it's a decent fit. Couple of power heads, definitely; plus a place to put the gear, which can demand its own room...
 
thanks! the reasonI chose 500 is because I dont think 300gal is much of an upgrade from 100gal. and my living room has a nice 15ft x 3ft space along with an empty storage room

I can finally get all those nice tangs and angels.

initial cost is going to be a killer, but I'll have time to slowly collect used pieces.
 
Build your own light. Rapid led is a good site to look into this. Get what you want and less than buying 6-8 radions
 
Thanks for posting this up. I've had my eye on a DSA 110. It's 60x20x21 with a center overflow. I've had freshwater setups when I was younger but now want to do a reef tank. My local LFS has some DSA tanks left and they carry the Marineland brand as well. I like the dimensions on the DSA tanks better. I want to try some corals and have more then 2 or three fish. I figured I would buy a few items a month and take my time buying the right stuff from the start.

Murdock, I have that tank (DSA 110). if you get it do yourself a favor and convert it to a Beananimal style overflow. All it took for me was a trip to Home Depot and I think I spent less than 50 but could have done it cheaper if I had the right equipment to start (I had to buy a pipe cutter, cement, thread tape and parts). Anyway, the overflow is so quiet now and the refugium is perfectly still. I will post pics soon but let me know if you need any help on that. I can try to help on here.
 
Murdock, I have that tank (DSA 110). if you get it do yourself a favor and convert it to a Beananimal style overflow. All it took for me was a trip to Home Depot and I think I spent less than 50 but could have done it cheaper if I had the right equipment to start (I had to buy a pipe cutter, cement, thread tape and parts). Anyway, the overflow is so quiet now and the refugium is perfectly still. I will post pics soon but let me know if you need any help on that. I can try to help on here.

Thanks, I've been watching your thread.
 
Couple of thoughts.

For someone w/o huge room or budget a stock 65 is good size. Nice mixed reef w maybe 4-8 smaller fish.

Re stability, larger will always be more stable but also, if a major deal occurs, much more work to correct.

Re: lighting and costs. The led lights use little power and put out little heat. Use external pumps where ever possible and voila! No need for a chiller. I am using 2 radion G3 pro units and so far not exceeding 50%. They are very strong and power consumption is low. Their spread is plenty wide too so you should be able to get good coverage 1 per 6 to 9 sq feet.
 
This should be another one to sticky. It would be great to help someone avoid the inevitable "I need a bigger tank" hassle that just about everyone does just once.
 
The feeling is that too many stickies overpower the threads; but I am saving some of these in my personal blog, blue number under my avatar.
 
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