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newb questions

2378 Views 34 Replies 4 Participants Last post by  Flint
I've currently got a 30g with a few cichlids and want to start a new 75 gallon Oscar tank, my questions are

- what will work on filtration without it costing me a bunch of money?.. im currently looking at getting 2 Marineland Penguin 350 Power Filters

- if I put 2 baby Oscars will they be ok?

- ive read and watched youtube videos on cycling a tank in 2 days using already established tank filter gunk in the new tank how true is this? and any recommendations without waiting a month.

- I wont buy plecos in the future but why did my 2 die and no other fish in the 30g? they were about an in an a half when I got them..

- whats an inexpensive stand for a 75g tank.. I was thinking of putting it on my computer desk (I have a laptop)

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first, ...
how heavy is your 75 gallon aquarium ?
Aquarium Sizes and Weights Chart

75gallon listed here as 850lb
so depending on decorations and low water levels, ... 800-900lb

i don't think your computer desk is going to hold it. i could be wrong, ... but i would rather err on the side of caution, ... that's a lot of water you don't want on the floor if your desk collapses in the middle of the night

if you can jump up and down on your desk with a friend and your desk holds up after a set time, ... maybe consider putting the aquarium there
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oscars are ... good with other oscars, ... i tend to stay away from aggressive fish.

different aggressive fish are your best bet on compatibility, ... because the other fish will stand up for itself, it will give as good as it gets.

but ... best to stay away from this idea, ... worst case scenario you loose one or the other, then both as infection sets in after a fight.

just don't put it on your computer desk unless it's good to hold 1/2 ton of weight easily

Edit 2:
from searches on smaller fish for min. tank sizes, ...
sure the 1" per gallon rule is good for stocking
generalized, it seems 10 gallons per inch is min. size for fish health (adult size)

a 2" fish (adult) is typically asking for a 20 gallon tank min.
a 10" fish tends to want a 100 gallon tank

from looking online
min. requirements
55 - 1 oscar
75 - 2 oscars
125 - 3 oscars (recommend 150)
200 - 4 oscars
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that took a bit to find how large adult oscars get

so i guess minimum size is also how many fish in the tank

community fish i'm gong to stick with 1" of fish per 10 gallons for min. size
for aggressive solitary fish i'm going to guess a tank 1/2 that size as an absolute minimum

otherwise the min. size for what i've ever found relates to how much space the fish needs to move around comfortably.
getting them small, ...

i would expect when they are younger they will be less agressive towards each other, more comptable in groups.

but that's like kids vs. adults

adults have more hormones that can bring us to more violence when someone intrudes on our space.

the hard part is getting them from a pet store they're like children, ...
for fish, as a young child, first priority is stay alive, ... don't spend your energy fighting your brother till you're older and you see your brother is eating your food, ... then beat the snot out of him because it's yours, and you don't want jeff looking at that food over there either, so beat him up twice as much to teach him a lesson

welcome to aggressive fish don't they place nice with others :)
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Flint, agreed

i know that 1" per gallon rule is ... it's a good place to start, and it takes almost nothing into effect

goldfish & the common pleco are notorious for eating & pooping lots, this pushes the bioload far higher than a standard fish that has that typical narrow fish look to it.

fancy goldfish have all the mass squished into a short body, discus, angelfish, others, have all the body size, but a shorter body, ... fish that eat & poop lots, doesn't matter their size, they eat & poop far more than the average fish...

dietary requirements rise just for larger fish, again throwing this off, ...

your right, the 1" per gallon rule of thumb is ... its' a good place to start when you don't know much about how to stock a tank, ... then they start rating fish on bioload ... how much will that one fish increase ammonia (and ultimately nitrate) levels in a tank due to their natural body functions


within reason, i have decided (just my own arbitrary decisions) that minimum size aquariums are about 10 gallons for every inch of fish, ... just to ensure the fish has enough room to swim in.

it's not always going to be right, some fish are fine moving slowly, so a smaller tank is fine, ... some fish really want & need a larger tank just to have room to really get going, ... but it's a good place to start i think if you don't know anything about the fish.

in both cases, always best to read up on the fish in your own personal time instead of looking for what others say, if unsure, err on the side of caution and get a larger tank.

best advice i ever heard "get a tank large enough for your fish when they have reached full grown size, because every intent of "i'll get a larger tank when they need it", ... your fish will continue growing till it's cramped and unhealthy, and that will continue till it dies, stressed & unhappy, ... the concern here is you have every best intent at heart, you can look at your savings and know "yes, this is reasonable, i'll be able to get a larger tank when i need one", ... but how sure are you that when you have to get a larger tank there hasn't been some emergency that was more important that spent that cash for you, ... vehicle repairs, family emergency, something came up you were not ready for.

getting a tank that is minimum size is ... never a good idea.
stocking a tank to the max is never a good idea.
and these are moderately fine with community & friendly fish.

if you've got aggressive fish in the mix, ... the smallest tank size you will ever get is for a breeding pair, sure they're still territorial, but like any couple, you make exceptions for the one you love, you do want them closer and that helps, ... in that case you can put 2 oscars in a min. sized tank for 2 oscars. if they're a breeding pair. ... i wouldn't recommend doing this with 2 males, ... and 2 females are questionable.

if you've got a 75 gallon tank and want to push the limits, sure get two oscars, ... learn to sex them so you can tell ASAP if you've got a male & female, ... if not, swap out one of them and get a different one.

and i have zero knowledge or advice on how these fish treat their young, ... maybe their food, maybe not, ... but gotta look into this stuff.

less pride, less ego, less stubbornness, ... it doesn't matter what you want, if you push ahead in the direction it sounds like your going, your going to be really upset to find one dead. and then is the realization that it wasn't worth pushing the limits, ...

do your homework, do a ton of research, put aside your ego, these aren't lego that are yours to play with, they're living creatures that have their own quirks and likes, ... you can want whatever you want but if they want different you're going to loose, ... and possibly the fish will loose too (big time)
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if you do want other tank-mates, ... i'd recommend guppies, ... well that's not so much tank-mates, but live food, pretty live food, but still live food.
a friend had an oscar fish years ago, she said she had it hand tamed, she could feed it from her hand, no one else, not even her husband would be allowed, the fish would snap at other hands just because.

no experience, but i would agree with Flint, rewarding, get to know your fish, and he'll treat you well too :)
best bet in my opinion, ... pick fish that are likewise aggressive, each will stake out it's own territory.

get fish at the same time so one doesn't get the idea that "this is my tank" ... getting them at the same time is more likely (no guarantee) that the fish will say "fine, if you want that there, then i want this here" and they keep to themselves.

still that's a lot of territorial fish in a small tank, if your oscar is expected to reach 12", in a tank that's 48" long, ... your oscar is physically 1/4 the length of the tank, ...

breeding pair is still best bet. and leave well enough alone instead of putting other fish in there.

looking at the physical size of a 75 gallon tank.
a 12" fish in that tank, ... wow, that's cramped in my opinion, sure it can turn around, but not a lot of extra room.
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