Question on light problems

hey guys, currently in a grow and my 750w hps blew on me sunday night and didnt have a back up bulb available..( i know right!) my question is i had to switch to a 400w hps bulb until my 750 comes in which will be about a week total. I was in week 4 of flower when it blew. By switching back to a 400w bulb mess with my yields a lot until my 750 comes back in? Thanks in advance. Ill drop a pic below.

If its just a couple weeks its not that bad, yes it will effect the overall yield but it depends on how long you wait, at least it didn't blow at the beginning of flower or you would have taken a bigger hit.

SPLFreak808 said:

If its just a couple weeks its not that bad, yes it will effect the overall yield but it depends on how long you wait, at least it didn't blow at the beginning of flower or you would have taken a bigger hit.

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Thanks for the positive input!