Speed up growth?

[tomsteer]

I successfully spawned my bettas just over 3 months ago, the fry have been growing very slowly, and from what I read when I was researching the fry should be at a sexable size at around 3 to 3.5 months.
At first I did weekly water changes which went to every 3 days now every other day as I read that not changing often enough lead to stunted growth. I have noticed a little difference in the size of a couple of them but not a lot.
They range from the biggest at just under an inch down to around half an inch; most are starting to show colour on their fins but nothing much on their bodies. I have just looked at another thread where 6 week old fry have nearly full colour.
I fed them on bbs and micro worms and now on live and frozen daphnia, and occasionally bw. They reside in a 2 foot tank filtered by a sponge filter, and there are 11 of them.

What am I doing wrong? Is there any way of speeding up their growth without doing them harm?
The reason I am looking to speed up their growth is that I am at uni and I will be going home in a few months and don’t really want to transport them in their small states.

Thanks for any help, Tom

 

[Joby]

I heard that water changes are a must and that they excrete hormones into the water so you need to dilute that out as its a defence mechanism to try and stop the rest of the spawn growing so they can grow big and survive

I change 50% on my fry tank everyday and so far most of them are 1 inch long and they are 5 weeks old tomorrow

I guess just lots of live/frozen food for them and lots of water changes

Maybe someone else will have a better idea why they aren't growing and what you can do. Love the green colour on that one though

 

[tomsteer]

thanks for the advice, i am only doing about 20% changes, i'll start the increase today,
thanks again, Tom

 

[Bettaman]

water changes a must and you don't say how many times a day you feed minimum of twice but i start at four times a day sometimes at one in the morning just to make sure they get the microworms or bbs......once they get the rapid growth and have labyrinth i feed 3 times a days and at about two months old down to twice a day......

 

[clover]

dont worry if they grow slow thats the best way then they will live longer as i was told on here.
mine are 10 weeks old and some are looking like they are only 4 weeks old where others are biggar than they should be.
but i remove the big ones and then the others seem to have groth sperts lol