diff --git a/app/aqua.hoon b/app/aqua.hoon
index 26227bf86..ab1abc9e6 100644
--- a/app/aqua.hoon
+++ b/app/aqua.hoon
@@ -24,7 +24,7 @@
       $%  [%wait wire p=@da]
           [%rest wire p=@da]
           [%hiss wire p=(unit user:eyre) q=mark r=(cask hiss:eyre)]
-          [%diff %aqua-effect aqua-effect]
+          [%diff %aqua-effects aqua-effects]
       ==
     ++  state
       $:  %0
@@ -44,8 +44,11 @@
     --
 =,  gall
 ::
-::  Hoist moves into state for cleaner state management
+::  aqua-effect-list: collect list of aqua effects to broadcast at once
+::                    to avoid gall backpressure
+::  moves: Hoist moves into state for cleaner state management
 ::
+=|  unix-effects=(jar ship unix-effect)
 =|  moves=(list move)
 |_  $:  hid=bowl
         state
@@ -77,7 +80,7 @@
   ::
   ++  emit-moves
     |=  ms=(list move)
-    =.  moves  (weld ms moves)
+    =.  this  (^emit-moves ms)
     ..abet-pe
   ::
   ::  Process the events in our queue.
@@ -341,17 +344,42 @@
   ++  publish-effect
     |=  ovo=unix-effect
     ^+  ..abet-pe
+    =.  unix-effects  (~(add ja unix-effects) who ovo)
+    ..abet-pe
+  --
+::
+++  this  .
+::
+::  ++apex-aqua and ++abet-aqua must bookend calls from gall
+::
+++  apex-aqua
+  ^+  this
+  =:  moves  ~
+      unix-effects  ~
+    ==
+  this
+::
+++  abet-aqua
+  ^-  (quip move _this)
+  =.  this
     %-  emit-moves
     %+  murn  ~(tap by sup.hid)
     |=  [b=bone her=ship pax=path]
     ^-  (unit move)
-    ?.  =(/effects/(scot %p who) pax)
+    ?.  ?=([%effects @ ~] pax)
       ~
-    `[b %diff %aqua-effect who ovo]
-  --
+    =/  who  (slav %p i.t.pax)
+    =/  fx  (~(get ja unix-effects) who)
+    ?~  fx
+      ~
+    `[b %diff %aqua-effects who fx]
+  [(flop moves) this]
+::
+++  emit-moves
+  |=  ms=(list move)
+  =.  moves  (weld ms moves)
+  this
 ::
-++  this  .
-++  abet-aqua  [(flop moves) this]
 ::
 ::  Run all events on all ships until all queues are empty
 ::
@@ -382,7 +410,7 @@
     `this
   ?~  (slaw %p i.pax)
     ~&  [%aqua-bad-peer-effects-ship pax]
-    `this
+    !!
   `this
 ::
 ::  Load a pill and assemble arvo.  Doesn't send any of the initial
@@ -391,7 +419,7 @@
 ++  poke-pill
   |=  p=pill
   ^-  (quip move _this)
-  =<  abet-aqua
+  =.  this  apex-aqua  =<  abet-aqua
   =.  pil  p
   ~&  lent=(met 3 (jam boot-ova.pil))
   =/  res=toon :: (each * (list tank))
@@ -421,7 +449,7 @@
 ++  poke-noun
   |=  val=*
   ^-  (quip move _this)
-  =<  abet-aqua
+  =.  this  apex-aqua  =<  abet-aqua
   ^+  this
   ::  Could potentially factor out the three lines of turn-ships
   ::  boilerplate
@@ -526,7 +554,7 @@
 ++  poke-aqua-events
   |=  events=(list aqua-event)
   ^-  (quip move _this)
-  =<  abet-aqua
+  =.  this  apex-aqua  =<  abet-aqua
   %+  turn-events  events
   |=  [ovo=aqua-event thus=_this]
   =.  this  thus
@@ -598,7 +626,7 @@
 ++  wake
   |=  [way=wire ~]
   ^-  (quip move _this)
-  =<  abet-aqua
+  =.  this  apex-aqua  =<  abet-aqua
   ?>  ?=([@ *] way)
   =/  who  (,@p (slav %p i.way))
   %+  turn-ships  ~[who]
@@ -611,7 +639,7 @@
 ++  sigh-httr
   |=  [way=wire res=httr:eyre]
   ^-  (quip move _this)
-  =<  abet-aqua
+  =.  this  apex-aqua  =<  abet-aqua
   ?>  ?=([@ *] way)
   =/  who  (,@p (slav %p i.way))
   ~&  [%received-httr who]
@@ -625,7 +653,7 @@
 ++  sigh-tang
   |=  [way=wire tan=tang]
   ^-  (quip move _this)
-  =<  abet-aqua
+  =.  this  apex-aqua  =<  abet-aqua
   ?>  ?=([@ *] way)
   =/  who  (,@p (slav %p i.way))
   ~&  [%received-httr who]
diff --git a/app/ph.hoon b/app/ph.hoon
index 5d8fd6a76..c9515eb2c 100644
--- a/app/ph.hoon
+++ b/app/ph.hoon
@@ -50,9 +50,9 @@
         ==
       ::
       ++  route
-        |=  ovo=aqua-effect
+        |=  [who=ship ovo=unix-effect]
         ^-  (list ph-event)
-        (expect-dojo-output ~bud ovo "[%test-result 5]")
+        (expect-dojo-output ~bud who ovo "[%test-result 5]")
         ::  XX  if it's been five minutes, we failed
       --
     ::
@@ -68,7 +68,7 @@
         ==
       ::
       ++  route
-        |=  ovo=aqua-effect
+        |=  [who=ship ovo=unix-effect]
         ^-  (list ph-event)
         ::
         ::  doesn't work because for some reason we lose the
@@ -76,7 +76,7 @@
         ::  because we receive so many events without immediate
         ::  reap it triggers the backpressure mechanism in gall?
         ::
-        (expect-dojo-output ~bud ovo "hi ~dev successful")
+        (expect-dojo-output ~bud who ovo "hi ~dev successful")
       --
     ==
   this
@@ -129,6 +129,7 @@
 ::
 ++  poke-noun
   |=  arg=*
+  ~&  %herm
   ^-  (quip move _this)
   ?+  arg  ~|(%bad-noun-arg !!)
       [%run-test lab=@tas]
@@ -139,11 +140,18 @@
     [(weld moves-1 moves-2) this]
   ==
 ::
-++  diff-aqua-effect
-  |=  [way=wire ovo=aqua-effect]
+++  diff-aqua-effects
+  |=  [way=wire ova=aqua-effects]
   ^-  (quip move _this)
-  ::  ~&  [%diff-aqua-effect way -.q.ovo.ovo]
+  ::  ~&  [%diff-aqua-effect way who.ova]
   ?>  ?=([@ @ ~] way)
   =/  lab  i.way
-  (run-events (route:(~(got by test-cores) lab) ovo))
+  %-  run-events
+  |-  ^-  (list ph-event)
+  ?~  ovo.ova
+    ~
+  ~&  [%diff-aqua-effect-i way -.q.i.ovo.ova]
+  %+  weld
+    (route:(~(got by test-cores) lab) who.ova i.ovo.ova)
+  $(ovo.ova t.ovo.ova)
 --
diff --git a/lib/ph.hoon b/lib/ph.hoon
index 81ea46ea4..5978fff34 100644
--- a/lib/ph.hoon
+++ b/lib/ph.hoon
@@ -23,7 +23,7 @@
   $_  ^?
   |%
   ++  start  *(pair (list ship) (list ph-event))
-  ++  route  |~(aqua-effect *(list ph-event))
+  ++  route  |~([ship unix-effect] *(list ph-event))
   --
 ::
 ++  ph-event
@@ -58,11 +58,13 @@
   ==
 ::
 ++  expect-dojo-output
-  |=  [who=ship ovo=aqua-effect what=tape]
+  |=  [who=ship her=ship ovo=unix-effect what=tape]
   ^-  (list ph-event)
-  ?.  ?=(%blit -.q.ovo.ovo)
+  ?.  =(who her)
     ~
-  ?.  %+  lien  p.q.ovo.ovo
+  ?.  ?=(%blit -.q.ovo)
+    ~
+  ?.  %+  lien  p.q.ovo
       |=  =blit:dill 
       ?.  ?=(%lin -.blit)
         |
diff --git a/sur/aquarium.hoon b/sur/aquarium.hoon
index d6bf34356..c265485fa 100644
--- a/sur/aquarium.hoon
+++ b/sur/aquarium.hoon
@@ -4,8 +4,8 @@
       [%event who=ship ovo=unix-event]
   ==
 ::
-++  aqua-effect
-  ,[who=ship ovo=unix-effect]
+++  aqua-effects
+  ,[who=ship ovo=(list unix-effect)]
 ::
 ++  unix-event
   %+  pair  wire