How long before this 50 gal tank is overgrown?

[AJmen]

Does anybody have a guestimate on how long before a 1.5" ST, with 3" Albino Senegals and 3"+ Delhezi grow out my 50 gal? I currently feed them with mealworms (4 for the ST 2 for each of the bichirs a day, pellets (yes everyday), and beefheart (just introduced to them this afternoon and they went nuts ). Will this diet affect their growth rate?

 

[AJmen]

Oops, wrong info, it's an IT

 

[Owens]

You have a while. The dat will really slow down around 5 or 6" and the sens can live in it for life

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[AJmen]

Owens, if I'm planning to set it into a Bichir tank, can I add another or 3 is enough?

 

[Owens]

I wouldn't see it being an issue.