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Originally Posted by Shurik Oh WOW! I am so happy to find this thread – I just set up 50 gal common gold fish tank. 
Actually I don’t know exactly what they are but they are definitely not fancy at all.
Abnormalsanon, your tank looks great, I love your scape and fish.  |
Thank you! Trust me, it did not look good a few months ago...it's been a long road.
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Originally Posted by Shurik Can you please tell me what is this light colored substrate you used to cap everything else? |
I started out last July with Aquasoil covered in a layer of pea gravel in the middle "island," surrounded by regular play sand. Of course the loach and goldies tossed the stuff everywhere, so now the gravel and sand have mixed a lot, but I kind of like the look of it. The Aquasoil has remarkably stayed in place in the center under the gravel.
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Originally Posted by Shurik My worries are my fish constantly takes everything into their mouth and spits it out. I got eco-complete and some desert sand I just replaced and it looks lousy without the sand.
Should I cap eco-complete with some bigger size gravel so they will not choke on it? Should I not use sand at all? Is eco-complete an OK substrate to use? They've been living with it for about two month... |
I think it depends on the individual fish, really. My big comet (RIP, Leroy!) loved to eat/spit out everything, but my remaining little guy doesn't do much digging/mouthing. I would probably replace the Eco Complete if you can, since it has sharp pieces in it. And of course, watch for any obstruction, and remove from their mouths carefully with tweezers if needed. I've found Eco Complete and sand to be a real mess when you have fish who like to dig. My 30 gal tropical tank has this mixture, and the corycats throw stuff around so much that I have to replace the sand every few months to keep it looking neat and clean.
If you do a search for "goldfish" on here, you'll probably find quite a few threads about planted tanks with goldies. You won't be able to get a neatly scaped and manicured tank with goldfish (at least not in my experience), but after many tries and a lot of patience, I have managed to get a decent looking setup running smoothly. The funny thing is, it's when I stopped doing any maintenance and basically gave up that the tank finally stabilized

Good luck!
Oh and I should add--if you use playsand, be sure to rinse it very carefully to get rid of all the dust. Otherwise the water surface will have a gross yellow film for a week or so.