Running Two Filters To Cycle One?

[Samphire]

4 weeks ago I upgraded my tank to a Jewul 190 Trigon due to my old tank developing a crack. Have had to cycle it fullky stocked, however, when I purchased it MLF did not put the correct filter in with it and the heater was broke.
They gave me a fluval4 to use while they ordered the original filter and heater.
Now, I have managed not to loose a fish in the 4 weeks I have been cycling the tank, they have now finally called after I gave them the ultimatum of it being here Saturday or they upgrade to the external filter I fancy to say it is in and I can collect.
I do NOT want to be doing 20% water changes every day after work for the rest of my life lol, so - is it ok to run both filters while the new one cycles?

Will it cycle quicker if I take some of sponge out of the old filter and place it in with the new one while running them both?

 

[Samphire]

26 views and not one comment or bit of advice, not even a look at this link for the answer. Guess I will go this one alone, hope it works. Thanks.

 

[flash22]

i am currently seeding my external filter by running it along with the juwel internal. 3-4 weeks should do it before i take out the internal longer the better i suppose

i am just treating it as new filter/tank so allowing it to cycle

 

[Samphire]

Thank's for that