# Merge paired reads with dada2 **URL:** https://forum.qiime2.org/t/merge-paired-reads-with-dada2/1353 **Category:** User Support **Tags:** dada2, joining, paired-end **Created:** [September 29, 2017, 7:44pm UTC](https://forum.qiime2.org/t/merge-paired-reads-with-dada2/1353 "2017-09-29T19:44:48Z") **Posts on this page:** 1 **Showing post:** 3
### Author: ![jairideout](https://forum.qiime2.org/user_avatar/forum.qiime2.org/jairideout/32/9_2.png) [@jairideout](https://forum.qiime2.org/u/jairideout) #### Post date: [September 30, 2017, 2:40am UTC](https://forum.qiime2.org/t/merge-paired-reads-with-dada2/1353/3 "2017-09-30T02:40:39Z")
Hi @Stream_biofilm! You'll want to import your _unjoined_ paired-end sequences and use q2-dada2 to denoise them. dada2 will join the reads for you during denoising. It's recommended that you avoid joining your reads prior to running DADA2. See these forum topics for more details: > [@Join paired ends of already demultiplexed sequences](https://forum.qiime2.org/t/join-paired-ends-of-already-demultiplexed-sequences/1354): > > I could not found any tutorial that shows how to join paired ends of demultiplexed data. I tried to join each sample individually using "Atacama soil microbiome" tutorial, but it did not worked, cause it needs a barcode file. How can I do it? > [@Import demultiplexed joined reads (R1+R2 joined)](https://forum.qiime2.org/t/import-demultiplexed-joined-reads-r1-r2-joined/1356): > > Dear colleagues, I am a new Qiime 2 user and I am attempting to import joined fastq files (this means that I have only one fastq per sample that includes R1+R2 joined). I am not sure how to import it into Qiime 2 in order to do quality filtering with DADA2. Thank you! --- _[View the full topic](https://forum.qiime2.org/t/merge-paired-reads-with-dada2/1353)._