South American Cichlids • 79 G Oscar tank

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79 G Oscar tank

Postby HeikkiL » Thu Dec 14, 2017 10:25 pm

Hello everybody,

I'm a Finn (as from Finland) living in Jakarta, Indonesia. Had aquariums for +35 years, several tanks with smaller cichlids, but finally thought "Heck, why not an Oscar?".

Tank is a 100 x 50 x 60 cm / 300 l (40" x 20" x 24" / 79 US Gal) and just waiting for the delivery. Decoration will be bare minimum with sand, rocks (is lava rock too sharp-edged or better use some "smoother" rocks?) and roots. Will be colonized by one Oscar without any tank mates. Filtration by a top filter (local-made 90 cm long box with different filter medias fed by a 1200 l/h pump) and an internal filter (800 l/h) plus a small wave maker. No plants so lighting by a basic 12W LED box.

Ah yes, one question also: what is the absolute maximum 24/7 tank temperature for an Oscar? Living next to The Equator and saving electricity by not using living room a/c too much is a bit of a challenge for aquariums: inside temperatures being around +30'C (+86F) mostly, so is a chiller needed to drop those few degrees. Didn't have that problem in Finland...
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Re: 79 G Oscar tank

Postby HeikkiL » Fri Dec 15, 2017 1:02 am

Over here in Far East there is a boom of Flowerhorn / ikan louhan (also arowanas are extremely popular and both species generally kept in all too small tanks, but that is another story...) and they are much more easily available compared to Oscars. Yes, it is an artificial breed, and yes, the looks are generally hideous, but a female with not-so-big-wart could be an option.
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Re: 79 G Oscar tank

Postby Oscar6 » Mon Dec 18, 2017 5:40 pm

Oscar will do fine in temps of mid 80's, even approaching 32C. Keep in mind that the warmer the water, the less oxygen. Surface agitation will help draw atmospheric O2 into the water column. I would advise however that tank footprint is very restrictive for an adult Oscar. 79g is also bottom end of minimum for volume. The female Flowerhorn with an overall smaller size would be better suited to your tank. An Oscar of a foot long, weighing a kilo will not be happy in a smallish tank.
1500 gallons of South and Central American cichlids. Some with a "wee" bit of attitude.
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Re: 79 G Oscar tank

Postby HeikkiL » Tue Dec 19, 2017 12:58 am

Guess you're right with Oscar tank size so is either a single Flowerhorn female or even more likely some collection of smaller cichlids + flock of Corydoras for S-American biotope.
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Re: 79 G Oscar tank

Postby HeikkiL » Thu Dec 28, 2017 6:11 am

...and going even smaller ones and changing continent - by accident met a guy who sells Tanganyika shell dwellers (have had those before in earlier tanks) and also some Julidochromis species and (even better) Altolamprologus compressiceps. So seems it'll be a Tanganyika tank then. Maybe Oscars in next one... :)
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