Old strobes as slave/fill

Hi,

I have a nikon d90 with ikelite housing.

my strobe is a Ikelite DS 200.

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I was wondering if i can use my cheapo ikelite AQ/S strobes as a slave/fill strobe.

I been using them topside as slaves with my aquarium pictures, they work well with that.

I understand that they usuially would have problems with the preflash signal, but wouldn't they just be triggered by the DS200 when it sends out its burst?

If your DS-200 does not put out a preflash, then yes the slave strobe should fire at the right time but I suspect it might be a full dump.