Dosing Alk and Calc directly to display?

[fluidimagery]

I've been dosing calc and alk to my tank using an AquaMedic reef doser for about 8 months. My readings have been good when I measure in the display but I don't have as much coraline in my display as I'd like.

However, in my sump where I dose both calc and alk there is tons of Coraline.

I was thinking if running the 1/4" tubing up to my display and dosing right where the return is from the sump.

I only dose each for 6 seconds every hour, I can't imagine there being a big problem with this, but just running it by you guys.

 

[tunicata]

hm...I dose directly into my main tank and have been getting steady coralline coloration. I dose right next to my return flow.

So, far parameters are still fine, my corals are still happy and healthy and this is how I've done it since I started dosing ESV B-onic 2 part in Nov.
I only dose a cup full, about 10cc's, every morning or night (whichever I have more time for that day) and its a system that is 90g total.

I suppose your tank is much bigger than mine, and ...how do you dose every hour??

 

[fluidimagery]

Thanks for the response. I'm using the AquaMedic Reef Doser Twin to dose every hour. Tank is 120g total volume

http://www.marinedepot.com/ps_ViewI...f_Electric_Powered_Plug_in_Units~vendor~.html

 

[ShaunW]

I dose directly to the display! It is much better than the sump, IMO. I was getting loads of calcification on the pumps magnets when I was dosing in the sump. The reason IMO is the high local Ca/Alk concentration due to the limited water volume in the sump (I have a low flow system from main tank to sump) and slowness to be dispersed to all the water within the system.

Putting it directly into the tank causes it to go into solution faster and the high flow spreads it around fast.

 

[cali_reef]

I don't think changing your dose point will make coraline grow any faster in your tank vs. sump, unless your water movement from your sump is super ultra slow.. Most likely the light condition and the substrate in the sump is more conducive for coraline growth.

 

[crox99]

Pierce

can you elaborate a little more on the light? I am having the same problem as fluidimagery and my sump is completely purple but my DT has very little coralline. on my DT I have 2x250 10k MH and 2x110 VHO and my sump has one of those energy efficent bulb. Also I have a small 3g Eclipse and I do water changes with water from my DT and the nano is completely full of coralline and it only has a 6w fluorescent bulb. Do you think the light is to bright in my DT for an optimal growth of coralline?