captain.koons
Member
Does anyone have it? Does it cover aquaponics?
Worth reading?
Someone!?
Cheers!
Worth reading?
Someone!?
Cheers!
Yep ... In the last HT I bought ... talked about a sock full of guano immersed in there too ...Didnt he call the technique guppy'ponics or somesuch title?
Hi captain.koons, I've run several aquaponics set-ups, and I had a lot more info with pics etc on Overgrow before it went down, but I have written some fairly long info here at icmag, Please do an advanced search for keyword aquaponics by author 10k and read up. Then post back here with whatever questions you may have. Better yet, post your questions to the threads you pull up in the search and I'll try to help the best I can. Sorry I hadn't replied sooner when you pm'd me, I was just a bit pre-occupied elsewhere.
Not a problem.
I've done a considerable amount of reading, mostly stuff from the stickied aquaponics log, general fish keeping at another forum, and stuff from breeder Steve. Question time!
1. In the Aquaponics sticky found above in this sub forum by "guest" he says that the nitrogen cycle is disrupted at pH's lower than 6 and that 7.5 is ideal for the bacteria. Is this accurate? I've read otherwise that the nitrogen cycle occurs in pH's as low as 3.5 which is far too low for the plants I'll be growing. I think a PH of 6.2-6.8 is what breeder steve aimed for I think this can be lowered if one desired.
2. Temps = Breeder steve maintained 22-24c/70-75f which is good for the plants but a lot of tropical fish suffer at temps that low. Breeder steve had a diverse mixture of cichlids mostly amazonian (oscars) and africans - the africans prefer a temp of 78-84f? If the water is aerated vigorously the temps don't matter too much do they? I figure 70-75f is as LOW as I'd want to go I think I'd want to be more in the 78-80f range and just take more steps in aeration.
3. Fish- picking fish isn't that easy I think I want live food eating fish to have a more organic and pure system I'm thinking oscars, catfish, plecos, misc scavengers or perhaps pike cichlids/snakeheads the latter will feel comfortable in temps of 18-22c/65-71f and a pH of 6. The prior im not 100% but amazon fish come from black water river and can tolerate pH of 4.5-7 and should be fine at 24c/75f
4. The system the aquaponics sticky said continuous fed is far better than ebb and flow and breeder steve seems to concur he uses a continuous flow to the plants which are in a gravel/clay type medium in a dutch bucket with 1" of top dressing which allows him to start seeds. The bottom of the bucket below the netpot has aerated lavarocks to work as a biofilter this fills to some point and is emptied via float valve.
I think I'll either mimic Breeder steve's system or have a continuous fed system with a seperate biofilter, I'm undecided how to set it up yet but I have extra tanks and plenty of bioballs from previous sump projects. I'm not 100% what I shall do yet.
5. On nutrient supplementation what experience do you have in this area? Breeder steve seems to have top dressed his plants witha 1" layer of worm castings and such above his hydro medium. Another thing he did which I find interesting is he put a sock full of guano and other assorted organic flowering nutrients to boost the ppm's and rework the nutrient profile. Knowing if top dressing is a good option seems fairly essential when planning the setup as it would do best in a bucket setup I would think.
6. as for pH up and down I know there's multiple options, breeder steve seemed to use stuff like apple juice or coffee for down and you mentioned potassium sillicate for pH up? I'd like natural, organic, and safe options for this.
7. there seems to be speculation that the biofilter isn't necessary, and that eventually the roots will just break down any fish waste - I believe this was covered in the aquaponics sticky via you recommendation - however the surface area of the biofilter would definitely be of value?
8. tank size vs fish count - breeder steve used a 90gal aquarium for 8kw of grow space, What do you think of lots of fish in a smaller "loop" creating higher ppm vs larger "loop" maybe as many fish collectively creating a more modest ppm but having more available nutrients? I don't know how fish would cope in a power outage if you had 500" of fish in a 90gal aquarium. I think for now I plan to run 2-3kw perhaps on such a size of tank if not larger.
in a continuously fed loop the ppms shouldn't matter as much as available nutrients I believe? I don't really know I've only run ebb and flow tables
9. Finally, how did you aerate and how much aeration is needed? Breeder steve apparently ran airstones in his lower pots which contained the biofilter and had a return reservoir at the end of his loop that returned water through pipes with holes as "rain" which would also aerate the loop. Any suggestions on this? I like the idea of the buckets and their massive surface area when considering the biofilter the whole setup seems rather elaborate though.
All in all I think I got this more or less figured out. The pH for the bacteria concerns me as does making a compromise in the temps for the fish and plants but it seems if one had the massive biofilter and aeration the plants could take rather high temps.
Basically I'm asking the benefits of overall more available nutrients vs less water with more available nutrients per gal.
for example you have a 100gal tank with fish that consume 100 feeders every 3days and I have a 500 gal with fish that consume 200 or more feeders every 3days, who is better off?
Thanks for the reply bro, it was very informative. I'm going on vacation this week until the end of August a friend is taking care of my garden. I plan to first test this system on my home aquarium which has aquatic turtles and cichlids when I get back. I'll likely start off with tomatoes and poppies which I'll make a grow log of for sure. I don't like posting up pictures of illegal things.
Hey man, if you can before you go on vacation, get some water flowing through a bulk of medium and keep it running so you can get a jump start on populating that medium with our little friends. Good aquaponics takes a good deal of time to really get a lush fully populated bio filtering action going in the medium. The longer the medium is in the loop being populated, the better the results will be.
You can grow some real "bull dogs" of tomatoes in aquapoincs, and they'd be great for the log you're planning to post.
The poppies thing however, would be frowned on here as some would see it as against the site terms of use if they're the papaver somniferum kind.
Looking forward to talking when you get back.