So I did some math and am still working on what each weapon's round is worth. However in the interest of getting some more people out there with these healing hives I'll share my findings.

Basically, I did some math to find that healing hives do about 6.6 armor HP healing per nanite cluster. This means that each respective healing hive module contains the below potential armor HP. This is the total amount per equipped module, not in each hive. But basically I think there is about 6.6 HP that comes per cluster.

Compact: 165 HP
K17/D: 950 HP
Allotek: 1425 HP
Wiyrkomi: 2000 HP

Naturally, some of them will also give some ammo, and therefore lose a bit of clusters to them. Also, I only experimented with a fit with both regular plates and reactive plates on an amarr logistics suit. I think there could be a small possibility that reactive plates or suit type could affect the nanite cluster cost.

If anyone would like to help with this project let me know. You just drop hives, and count the amount of ammo/HP dispensed until it is depleted. You should do it in a place where you won't be disrupted.

Both the proto and adv versions have the same number of clusters. So how is it that you are getting more hp with them?

I would imagine its a certain number of clusters for each second you are getting repaired rather than hp/cluster

Well the wyrikomi wouldn't give out ammo. I stood on my test hives ONLY after refilling all my ammo from a supply depot. I tried to manage my control variable.

Are we saying that there are two sets of 'nanite supplies' within each hive? One for ammo and one for armor? And that you could max one out before the other? I don't think this is how it works, but I guess I could test it by nearly maxing out an allotek from armor then emptying a gun to test.

This is incorrect. As the discussion in this thread has already showed a cycle of armor repair actually uses 3 nanites and then different weapons have different nanite costs which hasn't even been covered in this thread.