New to the hobby-started in August with a 29g BioCube, this week starting out a 75g - bought a "kit" and was told (and kinda shown) how to set it up. They said everything was included. I mcgivered (sp?) the connection to the sump with some PVC, thread tape, and emergency leak tape I found, but the connection from the pump to the return ... ? It's currently just set inside the pipe, not secure or tight whatsoever. Two different sizes (obviously). I'm a total newbie and not handy at all with plumbing... Should there be a way to connect these or is more DIY in order? Also, any suggestions on improving the intake to sump connection?

The flexible hose is attached to the sump, the vinyl hose is attached to my return pump below and only ran through the bulkhead fitting (to show size, I definitely was by no means planning on running it like this!). Here is all pictures. Everything shown came with the kit (minus the hose clamp). There will be a skimmer in center section of sump. There IS water in the system and water in the sump, but nothing running/no water in overflow. Water is only there because sand/live rock is in (Since we thought we had everything
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